Lucjan Piela


E-mail AddressL. Pasteura 1 St.
02-093 Warsaw

Table of contents

Information about Professor Lucjan Piela

Lucjan Piela was born in Sokołów Małopolski, Poland, on January 2nd , 1943. He received his bachelor degree in 1960 in his home town Rzeszow from the 350 years old Konarski College. In 1965 he graduated from the University of Warsaw, Chemistry Department (M.Sc.), and five years later obtained his Ph.D. under supervision of Professor Włodzimierz Kołos. Scientific career of Lucjan Piela is connected with the University of Warsaw, where he became professor in 1976. He also carried out research in the Centre Européen de Calcul Atomique et Moléculaire (France), Facultés Universitaires de Namur (Belgium), Cornell University (USA). Lucjan Piela is the author of about hundred papers published in international journals. He concentrated recently on writing the book “Ideas of Quantum Chemistry” (Elsevier, Amsterdam, 2007, 1100 pages). The book has two Polish editions (2003, 2012), the second English edition is under way.

In 2001 he has been elected an associated member of the Belgian Académie Royale des Sciences, des Lettres et des Beaux-Arts, and in 2004 a member of the European Academy of Sciences.

Main scientific activity of Professor Piela is focused in three domains:
  1. the long-range forces in molecules and polymers
  2. the global minimum problem in mathematics
  3. molecular electronic devices.

Main scientific activity

  1. The long-range forces in molecules and polymers
  2. Any theory of regular polymers (i.e., exhibiting a periodic symmetry) has to take into account all particle interactions. Long-range interaction of the unit cells (the periodic structure is composed of) turned out to represent a serious numerical problem (with an effort increasing exponentially with polymer size), since the interactions of a reference cell with the rest of the polymer decayed very slowly. Professor Piela together with his Belgian colleagues (Jean-Marie André, Joseph Delhalle, Jean-Luc Bredas) converted this problem to a very simple one [L.Piela, J.Delhalle, Intern.J.Quantum Chem., 13, 605 (1978), J.Delhalle, L.Piela, J.-L.Bredas, J.-M.André, Phys.Rev. B 22, 6254 (1980)]. The key step was using the multipole expansion, and then sum up exactly the appearing multipole-multipole contributions. The multipole expansion has been used in the intermolecular interaction theory, but Piela applied it for the first time to a single molecule.

    Lucjan Piela and Leszek Stolarczyk pointed out that most multipole expansion applications reported in the literature were coordinate-system dependent. The authors have proved a theorem indicating how the multipole expansion has to be modified to remove such a dependence [L.Z.Stolarczyk, L.Piela, Intern.J.Quantum Chem., 15,701 (1979)]. The obtained modified multipole expansion gave results invariant also with respect to the arbitrary choice of the unit cell. Only the corrected - not the original one - multipole procedure possesses this property. Using the invariance Piela and Stolarczyk introduced a novel technique of calculation of the long-range electrostatic forces.

    When the energy band gap is non-zero, the exchange energy is of the short-range, while for the zero gap (i.e. for metals) the exchange almost suddenly becomes of the long-range character. Piela with his collaborators explained this phenomenon by showing why the gap plays so critical role in the range of exchange interaction [L.Piela, J.-M.André, J.Fripiat, J.Delhalle, Chem.Phys.Letters, 77, 143 (1981)].

    Paper by R.A.Wheeler, L.Piela and R.Hoffmann on calculation on oligomers has been highlighted in Nachrichten aus der Chemie, Technik und Laboratorium 37(1989)116 as „significant advances in inorganic chemistry for 1988".

  3. The global minimum problem
  4. Global optimisation of a function, or searching for the optimum solution, is of importance in virtually all sciences, technology, economy etc. Piela, together with Jarosław Kostrowicki and Harold Scheraga, introduced a concept of a deformation of the energy hypersurface [L.Piela, J.Kostrowicki, H.A.Scheraga, J.Phys.Chem.93, 3339 (1989)]. In all other methods the target function (the hypersurface) was kept intact. The strategy behind the deformation was the following: deform the target function as to the number of its stable conformations decreases dramatically (sometimes to a single one), find much easier the new global minimum of the deformed function, then reverse the deformation gradually and follow the trajectory of the global minimum conformation until the undeformed target function is reached again. The method turned out to be able to obtain the global minimum for the widely accepted global optimisation test functions set either in the shortest time, or analytically, without any computations [J.Kostrowicki, L.Piela, J.Opt.Theor.Appl., 69, 269 (1991)].

    The idea of deformation is based on a destabilisation of all minima of a function by introducing smoothing techniques (Diffusion Equation Method, DEM, distance scaling method, shift method, also related to them: Self-Consistent Electrostatic Field, Self-Consistent Multi-Torsional Field - all designed by Piela and coworkers). The most widely known DEM method with the deformation parameter t often ends up at a simple analytical formula for the deformed function. The deformed function is much smoother than the original one. This leads to identifying the parameter t as time even for mathematical functions to be minimised with no relation to physics or chemistry. As shown by other authors the DEM method is related to several equations of physics: Schrödinger equation for time evolution of quantum systems, Bloch equation for the temperature evolution of the canonical ensembles, Smoluchowski and Fokker-Planck time evolution in statistical thermodynamics, time average over trajectories in molecular dynamics, etc. Professor Piela has shown that all equations that emerge in the global optimisation procedures based on these phenomena are particular cases of a more general mathematical scheme [L.Piela, Collect.Czech.Chem.Commun., 63, 1368 (1998)].

  5. Molecular electronic devices (mnemon)
  6. Professor Piela (together with Leszek Stolarczyk) proposed in 1984 a new kind of isomers. The isomers will differ by the electronic charge distribution rather than the nuclear framework as all the others do. According to that hypothesis some donor-acceptor oligomers may exhibit long-living isomeric electronic metastable states. The states would result from a cooperative effect of successive electron transfers from several electron donor to electron acceptor moieties of the molecule. Professor Piela and Anna Jagielska have proved by ab initio calculations that indeed in some substances a single electron transfer requires a considerable amount of energy, while a few such transfers need negligible energy. This creates a barrier separating the isomers and makes them long-living and therefore observable. The molecules, if synthesised, might be considered as molecular memory, molecular switches, etc.

Other fields of activity

Professor Piela serving as a dean of the Chemistry Department of the University of Warsaw has introduced profound changes described in L.Piela, "Management in Science - A Case Study", VII Annual Meeting of the European Association of Deans of Science, Wrocław, Poland, 1997]. He loves to paint, see the attached paintings.

Original articles and books (bold) by Lucjan Piela

  1. L.Piela
    O kilku osobliwościach w oddziaływaniach molekuł
    Wiad.Chem., 65, 2011, 11
  2. L.Piela
    From quantum theory to computational chemistry. A brief account of developments”, rozdział in Handbook of Computational Chemistry, J.Leszczynski (ed.),
    Springer (2011), Vol. 1, pp.2-12.
  3. L.Piela (ed.)
    book: „Inspiracje na osi czasu
    Warszawa, 2011
  4. L.Piela
    Challenging the Multiple Minima Problem: Example of Protein Folding”, in Practical Aspects of Computational Chemistry, J.Leszczyński, M.K.Shukla (eds.)
    Springer, 2009
  5. L.Piela
    Schroedinger solution to the Morse oscillator
    Phys.Today 61(2008)8.
  6. L.Piela
    book: „Ideas of Quantum Chemistry
    Amsterdam, Elsevier 2007 1-1086
  7. E.Małolepsza, M.Boniecki, A.Koliński, L.Piela
    Theoretical Model of Prion Propagation: A Misfolded Protein Induces Misfolding
    Proc.National Acad.Sci. (USA), 102 2005 7835-7840
  8. L.Piela
    book: „Idee chemii kwantowej
    Warszawa, PWN 2003 1-1137
  9. E. Małolepsza, L.Piela
    Hardness and HOMO-LUMO Gap Probed by the Helium Atom Pushing the Molecular Surface of the First-Row Hydride Molecules
    Collect.Czech.Chem.Commun. 68 2003 2344-2354
  10. L.Piela
    Deformation Methods of Global Optimization in Chemistry and Physics
    in P.M.Pardalos and H.E.Romeijn (eds.), Handbook of Global Optimization, Vol.2, 461-488, 2002 Kluwer Academic Publishers
  11. M.Orzechowski, P.Cieplak, L.Piela
    Theoretical Calculation of the Coiled-Coil Stability in Water in the Context of its Possible Use as a Molecular Rack
  12. E. Małolepsza, L.Piela
    Pauli Hardness Study in the Methane, Ammonia, Water and Hydrogen Fluoride Molecules
    J.Phys.Chem. 107 2003 5356-5360

    J.Comput.Chem. 23 2002 106-110
  13. W.Grochala, A.Jagielska, K.Woźniak, A.Więckowska, R.Bilewicz, B.Korybut-
    Daszkiewicz, J.Bukowska, L.Piela
    Neutral Ni (II) and Cr (II) Complexes of Tetraazatetraenemacrocycles
    Complexes of Tetraazatetraenemacrocycles”
    J.Phys.Org.Chem. 14 2001 63-73 84.
  14. A.Więckowska, R.Bilewicz, A.Misicka, M.Pietraszkiewicz, K.Bajdor, L.Piela
    A Novel Polynuclear Donor Complex Based on Helical Peptides with Aligned Electroactive Moieties
    Chem.Phys.Letters 350 2001 447-452
  15. M.Pietraszkiewicz, A.Więckowska, R.Bilewicz, A.Misicka, L.Piela, K.Bajdor
    Ferrocene Modified Oligopeptide as Model Compound for Charge-Transfer Interactions with Organic Electron Acceptors
    Materials Science and Engineering C 18 2001 121-124
  16. A.Jagielska, L.Piela
    Electrostatically Driven Electronic Molecular Bistability: Ab Initio Calculation for a Model (LiF)n System
    J.Chem.Phys., 112 2000 2579-2585
  17. A.Jagielska, R.Moszyński, L.Piela
    A Large Structural Polarization by Intermolecular Forces. Ab Initio Theoretical
    Investigation of the H3N…BH2CN and H3N…B(CN)3 Interactions

    Intern.J.Quantum Chem. 75 1999 177-185
  18. A.Jagielska, R.Moszyński, L.Piela
    Ab Initio Theoretical Study of Interactions in Borazane Molecule
    J.Chem.Phys. 110 1999 947-954
  19. A.Jagielska, L.Piela, L.Z.Stolarczyk
    Mnemon – A Hypothetical Molecule with Bistable Electronic Ground State
    Proc.1st Intern.Confer.on Rough Sets and Curr.Trends in Comp., Warsaw 1998
  20. J.Pillardy , L.Piela
    Multiple Elliptical-Gaussian-Density Annealing as a Tool for Finding the Most
    Stable Structures. Application to Lennard-Jones Atomic Clusters

    Pol.J.Chem. 72 1998 1849-1857
  21. L.Piela
    Search for the Most Stable Structures on Potential Energy Surfaces
    Collect.Czech.Chem.Commun. 63 1998 1368-1380
  22. B.Jeziorski, L.Piela (eds.)
    book: Special issue of Polish Journal of Chemistry
    Pol.J.Chem. 72 (1998)
  23. J.Pillardy, L.Piela
    ”Smoothing Techniques of Global Optimization: Distance Scaling Method in
    Searches for Most Stable Lennard-Jones Atomic Clusters”
    J.Comp.Chem.18 (1997) 2040-2049
  24. W.Nowaczek, L.Piela, L.Z.Stolarczyk
    ”Low-Energy Metastable Electronic States of Donor-Acceptor Oligomers”
    Advan. Mater. Optics and Electron. 6 (1996) 301-306
  25. J.M. André, G. Hardy, D.H. Mosley, L. Piela
    ”FSGO Hartree-Fock Instabilities of Hydrogen in External Electric Fields”
    in: Strategies and Applications in Quantum Chemistry, edited by Y.Ellinger and
    M.Defrancheschi, pp. 189-202, (Kluwer, Dordrecht, 1996)
  26. J.Pillardy, L.Piela
    Molecular Dynamics on Deformed Energy Hypersurfaces
    J.Phys.Chem. 99 (1995) 11805-11812
  27. L.Piela, K.Olszewski, J.Pillardy
    On the Stability of Conformers
    J.Mol.Struct.(Theochem) 308, 229-239 (1994)
  28. K.Olszewski, L.Piela, H.A.Scheraga
    Mean Field Theory as a Tool for Intermolecular Conformational Optimization.
    Test on Homopolypeptides Decaglycine and Icosalanine

    J.Phys.Chem. 97, 260-266 (1993)
  29. K.Olszewski, L.Piela, H.A.Scheraga
    Mean Field Theory as a Tool for Intermolecular Conformational Optimization.
    Test on Melittin

    J.Phys.Chem. 97, 267-270 (1993)
  30. M.Bagiński, L.Piela
    Theoretical Comparison of Conformational Properties of Molecules.
    Conformational Probability Maps and Similarity Index

    J.Comput.Chem. 14, 314-328 (1993)
  31. M.Bagiński, L.Piela, J.Skolnick
    The Ethylene Group as a Peptide Bond Mimicking Unit. A Theoretical
    Conformational Analysis

    J.Comput.Chem. 14, 296-313 (1993)
  32. J.Pillardy, K.A.Olszewski, L.Piela
    Performance of the Shift Method of Global Minimization in Searches for
    Optimum Structures of Clusters of Lennard-Jones Atoms

    J.Phys.Chem.96, 4337-4341 (1992)
  33. J.Pillardy, K.Olszewski, L.Piela
    Theoretically Predicted Lowest-Energy Structures of Water Clusters
    J.Mol.Struct. 270, 277-285 (1992)
  34. K.Olszewski, L.Piela, H.A.Scheraga
    Mean Field Theory as a Tool for Intramolecular Conformational Optimization. 1.
    Tests on Terminally-Blocked Alanine and Met-Enkephalin

    J.Phys.Chem. 96, 4672-4676 (1992)
  35. D.R.Ripoll, L.Piela, M.Vasquez, H.A.Scheraga
    On the Multiple-Minima Problem in the Conformational Analysis of
    Polypeptides. V. Application of the Self-Consistent Electrostatic Field Method
    and the Electrostatically Driven Monte Carlo Method to Bovine Pancreatic
    Trypsin Inhibitor

    Proteins 10, 188-198 (1991)
  36. J.Kostrowicki, L.Piela, B.J.Cherayil, H.A.Scheraga
    Performance of the Diffusion Equation Method in Searches for Optimum
    Structures of Clusters of Lennard-Jones Atoms

    J.Phys.Chem. 95, 4114-4119 (1991)
  37. J.Kostrowicki, L.Piela
    Diffusion Equation Method of Global Minimization. Performance of the Method
    for Standard Test Functions

    J.Opt.Theory and Appl. 69, 269-284 (1991)
  38. K.Olszewski, M.Gutowski, L.Piela
    Interpretation of the Hydrogen Bond Energy at the Hartree-Fock Level for Pairs
    of the HF, H2O and NH3 Molecules

    J.Phys.Chem. 94 5710-5714 (1990)
  39. L.Piela, J.Kostrowicki, H.A.Scheraga
    On the Multiple-Minima Problem in the Conformational Analysis of Molecules.
    Deformation of the Potential Energy Hypersurface by the Diffusion Equation

    J.Phys.Chem. 93, 3339-3346 (1989)
  40. L.Piela
    Problem minimum globalnego w analizie konformacyjnej cząsteczek
    Wiad.Chem. 43, 639-649 (1989)
  41. R.A.Wheeler, LPiela, R.Hoffmann
    A Reciprocal Space Approach to the Orbitals of Truncated Crystals
    J.Am.Chem.Soc.110, 7302-7315 (1988)
  42. M.Gutowski, L.Piela
    Interpretation of the Hartree-Fock Interaction Energy between Closed-Shell

    Mol.Phys. 64, 337-355 (1988)
  43. J.-M.André, J.Delhalle, J.G.Fripiat, G.Hennico, L.Piela
    Calculations of Molecuar Polarizabilities from Electric-Field-Variant Atomic
    Orbitals:An Analysis of the Problem and its Application to the Hydrogen
    Molecule and to the Alkane Series

    Intern.J.Quantum Chem. S 22, 665-678 (1988)
  44. J.-M.André, J.Delhalle, J.G.Fripiat, G.Hennico, J.-L.Calais, L.Piela
    On the Restricted Hartree-Fock Description of Oligomer Chains with Expected
    Metallic Character

    J.Mol.Struct.(Theochem) 179, 393-406 (1988)
  45. R.A.Wheeler, L.Piela, R.Hoffmann
    Cluster, Surface and Interface Chemistry: A Novel Crystal Orbital Approach to
    Dangling and Non-dangling Bonds

    in : Proc.Conference on Cluster, Surface and Interface Chem., Harvard Univ.(1987)
  46. S.Talluri, G.T.Montelone, G.Duyne, L.Piela, J.Clardy, H. A.Scheraga
    Conformational Properties of 2,4-Methanoproline (2-Carboxy-2,4-
    Methanopyrrolidine) in Peptides: Evidence for 2,4-Metha-nopyrrolidine
    Asymmetry Based on Solid State X-Ray Crysta-llography, 1H-NMR in Aqueous
    Solution and CNDO/2 Conformational Energy Calculations

    J.Am.Chem.Soc. 109, 4473-4477 (1987)
  47. L.Piela, H.A.Scheraga
    On the Multiple Minima Problem in the Conformational Analysis of
    Polypeptides.I. Backbone Degrees of Freedom for a Perturbed a-Helix

    Biopolymers 26, S33-S58 (1987)
  48. L.Piela, G.Némethy, H.A.Scheraga
    Proline-Induced Constraints in a-Helices
    Biopolymers 26, 1587-1600 (1987)
  49. L.Piela, G.Némethy, H.A.Scheraga
    Conformational Constraints of Amino Acid Side Chains in a-Helices
    Biopolymers 26, 1273-1286 (1987)
  50. L.Piela, G.Némethy, H.A.Scheraga
    Conformational Properties of 2,4-Methanoproline (2-Carboxy-2,4-
    Methanopyrrolidine) in Peptides: Theoretical Conformational Energy Analysis of
    Restrictions of the Polypeptide Chain Conformation

    J.Am.Chem.Soc. 109, 4477-4485 (1987)
  51. M.Gutowski, F.B.Duineveldt, G.Chałasiński, L.Piela
    Proper Correction for the Basis Set Superposition Error in SCF Calculations of
    Intermolecular Interactions

    Mol.Phys. 61, 233-248 (1987)
  52. L.Piela
    Trends in Quantum Theory of Polymers
    Pol.J.Chem. 60, 331-345 (1986)
  53. M.Gutowski, F.B.Duijneveldt, G.Chałasiński, L.Piela
    Does the Boys and Bernardi Function Counterpoise Actually Overcorrect the
    Basis Set Superposition Error?

    Chem.Phys.Lett. 129, 325-328 (1986)
  54. L.Z.Stolarczyk, L.Piela
    Hypothetical Memory Effects in Some Donor-Acceptor Complexes
    Materials Science 10, 263-266 (1984)
  55. L.Piela, J.-L.Brédas, J.-M.André
    Cancellation of Low Order Electric Moments of the Unit Cell: An Efficient Way
    of Calculating Crystal Field Effects in Hartree-Fock Computations on Periodic

    J.Chem.Phys. 78, 295-300 (1983)
  56. M.Gutowski, M.Kąkol, L.Piela
    Importance of Exchange Effects in the Deformation of Interacting Ions
    Int.J.Quantum Chem. 23, 1843-1853 (1983)
  57. J.-L.Brédas, B.Thémans, J.-M.André, L.Piela
    Theoretical Studies of Localization Phenomena in Excited States of Polyene

    Bull.Soc.Chim.Belg. 92, 1-8 (1983)
  58. J.-M.André, J.-L.Brédas, B.Thémans, L.Piela
    Exchange, Correlation and Band Gaps in Conjugated Linear Chains
    Int.J.Quantum Chem. 23, 1065-1073 (1983)
  59. L.Z.Stolarczyk, L.Piela
    Direct Calculation of Lattice Sums. A Method to Account for the Crystal Field

    Int.J.Quantum Chem. 22, 911-927 (1982)
  60. L.Piela, L.Z.Stolarczyk
    On the Relativity of Short-and Long-Range Effects in Calculations for Periodic

    Chem.Phys.Letters 86, 195-198 (1982)
  61. L.Piela
    Paolo Arrighini - Intermolecular Forces and Their Evaluation by Perturbation

    Pol.J.Chem. 7-9, 1205-1206 (1982)
  62. L.Piela, J.-M.André, J.G.Fripiat, J.Delhalle
    On the Behaviour of Exchange in Restricted Hartree-Fock-Roothaan Calculations
    for Periodic Polymers

    Chem.Phys.Letters 77, 143-150 (1981)
  63. M.Gutowski, M.Kąkol, J.Andzelm, L.Piela
    Approximate Exchange and Electrostatic Interaction Energies of Deformed Ions
    Int.J.Quantum Chem. 19, 401-411 (1981)
  64. J.Delhalle, J.-M.André, L.Piela, L.Z.Stolarczyk
    Potential Use of the Unit Cell Arbitrary Concept to Evaluate Long-Range
    Interactions in Quantum Mechanical Studies of Model Polymers

    Int.J.Quantum Chem. S15, 217 (1981)
  65. L.Piela, J.-M.André, J.-L.Brédas, J.Delhalle
    Long-Range Interactions in Periodic Helices. A Method for Accurate Calculation
    at the Hartree-Fock Level

    Int.J.Quantum Chem. S14, 405-418 (1980)
  66. L.Piela
    Multipole Expansion Technique as a Tool for Solving the Long-Range Problems
    in Polymers

    Lecture Notes in Physics 113, 104-120 (1980)
  67. J.Delhalle, L.Piela, J.-L.Brédas, J.-M.André‚
    Multipole Expansion in Tight-Binding Hartree-Fock Calculations for Infinite
    Model Polymers

    Phys.Rev. B22, 6254-67 (1980)
  68. J.Delhalle, J.G.Fripiat, L.Piela
    On the Use of Laplace Transform to Evaluate One-Dimensional Lattice
    Summations in Quantum Calculations of Model Polymers

    Int.J.Quantum Chem. S14, 431-442 (1980)
  69. J.-M.André, J.-L.Brédas, J.Delhalle, Y.Kalenov, L.Piela, J.-L.Calais
    AMO in Linear Chains of Hydrogen Atoms Revisited
    Int.J.Quantum Chem. S14, 419-429 (1980)
  70. L.Z.Stolarczyk, L.Piela
    Invariance Properties of the Multipole Expansion with Respect to the Choice of
    the Coordinate System

    Int.J.Quantum Chem. 15, 701-711 (1979)
  71. L.Piela, J.Andzelm
    Madelung and Dispersion Contributions to the Binding Energy of an Ion on the
    Unrelaxed (100) and (110) Faces of the NaCl-Type Crystal

    Surf.Sci. 84, 179-189 (1979)
  72. J.Golka, E.Pavlidou, L.Piela
    Far-Infrared Absorption in Highly Doped Semiconductors
    Proceed. of XIV International Conference on the Physics
    of Semiconductors (Edinburgh 1978),
    Inst.Phys.Conf.Series 43, 953-956 (1979)
  73. L.Piela, J.Delhalle
    An Efficient Procedure to Evaluate Long-Range Coulombic Interactions within
    the Framework of the LCAO-CO Method for Infinite Polymers

    Int.J.Quantum Chem. 13, 605-617 (1978)
  74. L.Piela, J.Delhalle
    Developpement multipolaire de l'operateur d'interaction Coulombienne et
    dépendence du choix du systéme d'axes

    Ann.Soc.Sci.Bruxelles 92, 42-52 (1978)
  75. J.Andzelm, L.Piela
    Ab Initio Calculation of Cohesion Energy, Density and Compressibility of the
    NaF Crystal

    J.Phys.C: Solid State Phys. 11, 2695-2701 (1978)
  76. J.Golka, L.Piela
    Interaction between Shallow Hydrogenic Donors: Three Impurity Molecules in

    Solid State Commun. 21, 691-693 (1977)
  77. J.Andzelm, L.Piela
    Ab Initio Calculation of Cohesion Energy, Density and Compressibility of the LiF

    J.Phys.C: Solid State Phys. 10, 2269-2283 (1977)
  78. B.Jeziorski, M.Bulski, L.Piela
    First-Order Perturbation Treatment of the Short-Range Repulsion in a System of
    Many Closed-Shell Atoms or Molecules

    Int.J.Quantum Chem. 10, 281-297 (1976)
  79. L.Z.Stolarczyk, L.Piela
    Electronic Valence Band Calculation for the Molecular Hydrogen Crystal
    J.Physics C:Solid State Phys. 8, 3779-3787 (1975)
  80. L.Piela
    Symmetry- Adapted Perturbation Theory Analysis of Band Structure for a Linear
    H2 Crystal

    J.Physics C:Solid State Phys. 8, 2606-2614 (1975)
  81. L.Piela
    The Usefulness of Deformed Molecular Orbitals in Calculations for Crystal
    Acta Physica Polon. A47, 329-334 (1975)
  82. E.Lipczyńska-Kochany, L.Piela
    Theoretical Investigation of Intramolecular Hydrogen Bond in 2-Nitroethanol by
    the CNDO/2 Method

    Bull.Pol.Acad.Sci. 23, 895-900 (1975)
  83. L.Piela, L.Pietronero, R.Resta
    Electron Band Structure of Solid Methane. Inclusion of Intermolecular Self-
    Consistency in Calculations

    Phys.Rev. B9, 5332-5333 (1974)
  84. . L.Piela, L.Pietronero, R.Resta
    Electron Band Structure of Solid Methane. Ab Initio Calculations
    Phys.Rev. B7, 5321-5329 (1973)
  85. L.Piela
    Ab Initio SCF LCAO MO Study of the HOH..Cl Hydrogen Bond
    Chem.Phys.Letters 19, 134-136 (1973)
  86. L.Piela
    On the Hydrogen Bonding between Water and Ammonia Molecules
    Chem.Phys.Letters 15, 199-202 (1972)
  87. L.Piela, B.Jeziorski
    Perturbation Theory of Intermolecular Forces in the Small Overlap Region. Part

    Acta Phys.Polon. A42, 185-197 (1972)
  88. B.Jeziorski, L.Piela
    Perturbation Theory of Intermolecular Forces in the Small Overlap Region. Part

    Acta Phys.Polon. A42, 177-184 (1972)
  89. . L.Piela
    Peturbational Calculation of the Exchange Forces in the Two Lowest States of the
    Hydrogen Molecule

    Int.J.Quantum Chem. 5, 85-99 (1971)
  90. G.Chałasiński, W.Kołos, B.Petelenz, L.Piela
    Gaussian Orbitals in the Calculation of the Second-Order Correction in the
    Interaction Energy of Two Hydrogen Atoms

    Chem.Phys.Letters 12, 233-235 (1971)
  91. L.Piela
    On the Usefulness of Approximate Exchange Integrals in Calculation of the Long-
    Range Forces

    Chem.Phys.Letters 7, 591-592 (1970)
  92. L.Piela
    Long-Range Interactions in the Ground and Two Excited States of the HeH+
    ” Int.J.Quantum Chem. 3, 945-968 (1969)
  93. W.Kołos, L.Piela
    Teoria wiązania wodorowego” (Hydrogen Bonding Theory) w książce:
    Wiązanie wodorowe” (Hydrogen Bond)
    P.W.N., Warszawa (1966)
  94. W.Kołos, L.Piela
    On the Stretching Vibration Frequencies of the Water Molecule Bound with Ions
    Roczniki Chem. 40, 713-714 (1966)

Selected other publications

  1. L.Piela
    Delta 3, 16 (1975)
  2. L.Piela
    Delta 7, 3 (1975)
  3. L.Piela
    Delta 9, 6 (1975)
  4. L.Piela
    Wykorzystanie wskaźnika impact factor
    Orbital, 2 1994 3-13
  5. L.Piela
    Jak mierzyć osiągnięcia placówek naukowych?
    Orbital, 4 1995 171-179
  6. L.Piela
    Lista 40 pracowników WCh UW z dorobkiem o najwyższym olczynnikiem wpływu
    Orbital, 5 1995 222-224
  7. L.Piela
    Członek Honorowy PTCh Profesor Jean-Marie Andre – doktorem honoris causa
    Uniwersytetu Warszawskiego

    Orbital, 5 1995 224-225
  8. L.Piela
    System reform na Wydziale Chemii Uniwersytetu Warszawskiego
    Orbital, 2 1996 68-74
  9. L.Piela
    Dziesięć publikacji 1994 z Wydziału Chemii UW o najwyższym współczynniku

    Orbital 4, 1996 179-182
  10. L.Piela
    Uwagi o projekcie prof.L.Pawłowskiego
    Orbital, 4 1996 182-183
  11. B.Jeziorski, L.Piela, K.Szalewicz
    Włodzimierz Kołos
    Physics Today 50, 1997, 108.
  12. L.Piela
    Wspomnienie o Włodzimierzu Kołosie
    Postępy Fizyki 48, 1997, 1
  13. L.Piela
    Blask sławy – tanio
    Orbital, 3 1997 147-148
  14. L.Piela
    Czy trzeba i czy można porównywać poziom naukowy instytucji z różnych

    Orbital, 4 1997 187-195
  15. L.Piela
    Dlaczego nie zrobił PAN tabeli?
    Orbital, 6 1997 316-319
  16. L.Piela
    Management in Science – A Case Study
    Proc.VII Annual Meeting of the European Assoc. Deans of Science
    Wrocław 1997
  17. L.Piela
    Wspomnienie o Włodzimierzu Kołosie
    Postępy Fizyki, 48 1997 1-4
  18. L.Piela
    Roald Hoffmann
    Orbital, 3 1998
  19. L.Piela
    Roald Hoffmann w Polsce
    Orbital, 5 1998 263
  20. L.Piela
    Zamiast lamentu nad szkolnictwem
    Orbital, 1 1999 10-18
  21. L.Piela
    John A.Pople – Nagroda Nobla 1998
    Orbital, 1 1999 19-21
  22. L.Piela
    Po pierwsze, nie szkodzić
    Forum Akademickie, 2001, 27-28
  23. L.Piela
    Dziwny jest ten świat
    Orbital 2004
  24. L.Piela
    Osiągnięcia chemików
    Księga Jubil. I Liceum, Rzeszów, 2008
  25. L.Piela
    Czas, rytmy chemiczne i przyszłość chemii
    w książce „Czas i przestrzeń”, witryna UW
  26. L.Piela
    Podstawy podstaw
    Orbital 2010
  27. L.Piela
    Newtonowska dynamika biurokracji
    Orbital 2010
  28. L.Piela
    Profesor Andrzej Sadlej
    Orbital 2010
  29. L.Piela i inni
    Misja Uniwersytetu – aspekt dzisiejszy
    Uniwersytet Warszawski, 2011, 36
  30. L.Piela
    Mozart chemii
    Uniwersytet Warszawski, 54, 2011
  31. L.Piela
    Społeczeństwo oparte na wiedzy
    Uniwersytet Warszawski, 55, 2011, 36
  32. L.Marks, L.Piela
    Walka z klimatem
    Uniwersytet Warszawski, 56, 2012, 52
  33. L.Piela
    Quantum scimus gutta est or wonders of quantum chemistry
    article in 2012