Quantum Chemistry  April 1994  Vol. 50, No. 3 
 
 
Quantum Chemistry Study on B_{14}, B^{2-}_{14}, and B_{14} H^{2-}_{14}

QIAN SHU LI, FENG LONG GU,* AND AU CHIN TANG ..............173


Quantum Chemical Study of Catalysts Based on Oxides of
Transition Metals

OLEG L. SHCHEKA, NICKOLAY V. DOBRODEY, TATYNA B. EMELINA ...... 181


Aromaticity in Metallacyclobutadienes from the Perspective of
the Valence Bond Theory

LUIS RINCON ................. 189


Orbital Binding Effect in Molecular Orbital Theory

XIANG-YANG WANG ................. 197


Quasi-Spin and the Pseudo-Orthogonal Group in the Hubbard Model

M. D. GOULD, J. PALDUS, AND J. CIZEK ................ 207

==================================================================


Quantum Chemistry  May 5, 1994  Vol. 50, No. 4 
 
 
Band Structures of Al-Doped Superconductors YBa_{2}Cu_{3-x}Al_{x}O_{7+�}

LI MING ................. 233



On Multireference Superdirect Configuration Interaction in Third
   Order

WODZISAW DUCH AND JAROSAW MELLER ................. 243



Antiaromaticity in Relation to 1,3,5,7-Cyclooctatetraene Structures

PETER POLITZER, JANE S. MURRAY, AND JORGE M. SEMINARIO............ 273



Collision-Induced Intensity of the b^{1}�^{+}_{g} -- a^{1}Δ_{g}
   Transition in Molecular Oxygen: Model Calculations for the
   Collision Complex O_{2} + H_{2}

BORIS F. MINAEV, STEN LUNELL, G. I. KOBZEV ................. 279



Second Quantization and Coefficients of Fractional Parentage

ANDRIUS BERNOTAS AND JULIUS KANIAUSKAS ................. 293


Quantum Chemistry  May 1994  Vol. 50, No. 5 
 
 
Correlated Polarization Propagator Calculations of Static
Polarizabilities

STEPHAN P. A. SAUER AND JENS ODDERSHEDE ................. 317


END (Electron Nuclear Dynamics) with the Hydrogen Molecule Used
as a Model Problem

ANNA POHL, HUGH TAYLOR, AND JEAN-LOUIS CALAIS ................. 333


Multiple Solutions of the Single-Reference Coupled-Cluster
Equations. I. H4 Model Revisited

K. JANKOWSKI, K. KOWALSKI, AND P. JANKOWSKI ................. 353


On Conjugated-Circuit Polynomials

DOUGLAS J. KLEIN, MILAN RANDIC, DARKO BABIC AND NENAD TRINAJSTIC ..... 369


Quantum Chemistry  June 1994  Vol. 50, No. 6 
 
 
The Relative Stability of the Tautomers of \alpha-Hydroxytetronic Acid

THOMAS BACKER, MARTIN KLESSINGER, MIRJANA ECKERT-MAKSIC AND 
VONIMIR B. MAKSIC .................385


Direct Solution of the Many-Body Schrodinger Equation in the
Hyperspherical Formalism: Application of the HH--GLF Method to
the Positronium Ion e^{+}e^{-}e^{+}

WENSHENG BIAN AND CONGHAO DENG ................. 395


A Quantum Monte Carlo Simulation of the Two-Dimensional H_{2} Molecule

R. BIANCHI, D. BRESSANINI, P. CREMASCHI, M. MELLA, AND G. MOROSI ..... 401


Relativistic Quantum Defect Calculations on the Copper
Isoelectronic Sequence

C. LAVIN, C. BARRIENTOS, AND I. MARTIN ................. 411


Spatially Confined Simple Quantum Mechanical Systems

C. ZICOVICH-WILSON, J. H. PLANELLES, W. JASKOLSKI ................. 429


Subject Index to Volumes 49 and 50 ................... 451


Author Index to Volumes 49 and 50 ................... 461