Accurate adiabatic correction for the hydrogen molecule using the Born-Handy formula

被引:62
作者
Cencek, W [1 ]
Kutzelnigg, W [1 ]
机构
[1] ADAM MICKIEWICZ UNIV POZNAN,DEPT CHEM,PL-60780 POZNAN,POLAND
关键词
D O I
10.1016/S0009-2614(97)00017-1
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The adiabatic correction has been computed for the ground state of the hydrogen molecule at R = 1.4 bohr using the formula suggested by Handy - that avoids the specification of the relative coordinates - and Gaussian geminal wavefunctions. It is demonstrated that this method allows one to obtain easily very accurate results. The computed value for H-2 has an accuracy of 10(-4) cm(-1). (C) 1997 Published by Elsevier Science B.V.
引用
收藏
页码:383 / 387
页数:5
相关论文
共 17 条
[1]   ADIABATIC CORRECTION FOR NONLINEAR TRIATOMIC-MOLECULES - TECHNIQUES AND CALCULATIONS [J].
BARDO, RD ;
WOLFSBERG, M .
JOURNAL OF CHEMICAL PHYSICS, 1978, 68 (06) :2686-2695
[2]  
Born M., 1956, Theory of Crystal Lattices
[3]   BENCHMARK CALCULATIONS FOR 2-ELECTRON SYSTEMS USING EXPLICITLY CORRELATED GAUSSIAN FUNCTIONS [J].
CENCEK, W ;
KOMASA, J ;
RYCHLEWSKI, J .
CHEMICAL PHYSICS LETTERS, 1995, 246 (4-5) :417-420
[4]   Accurate relativistic energies of one- and two-electron systems using Gaussian wave functions [J].
Cencek, W ;
Kutzelnigg, W .
JOURNAL OF CHEMICAL PHYSICS, 1996, 105 (14) :5878-5885
[5]   AB-INITIO RO-VIBRATIONAL LEVELS OF H-3(+) BEYOND THE BORN-OPPENHEIMER APPROXIMATION [J].
DINELLI, BM ;
LESUEUR, CR ;
TENNYSON, J ;
AMOS, RD .
CHEMICAL PHYSICS LETTERS, 1995, 232 (03) :295-300
[6]   The adiabatic approximation [J].
Handy, NC ;
Lee, AM .
CHEMICAL PHYSICS LETTERS, 1996, 252 (5-6) :425-430
[7]   THE DIAGONAL CORRECTION TO THE BORN-OPPENHEIMER APPROXIMATION - ITS EFFECT ON THE SINGLET-TRIPLET SPLITTING OF CH2 AND OTHER MOLECULAR EFFECTS [J].
HANDY, NC ;
YAMAGUCHI, Y ;
SCHAEFER, HF .
JOURNAL OF CHEMICAL PHYSICS, 1986, 84 (08) :4481-4484
[8]   The diagonal Born-Oppenheimer correction for He-2(+) and F+H-2 [J].
Ioannou, AG ;
Amos, RD ;
Handy, NC .
CHEMICAL PHYSICS LETTERS, 1996, 251 (1-2) :52-58
[9]   ACCURATE ADIABATIC TREATMENT OF GROUND STATE OF HYDROGEN MOLECULE [J].
KOLOS, W ;
WOLNIEWI.L .
JOURNAL OF CHEMICAL PHYSICS, 1964, 41 (12) :3663-&
[10]   IMPROVED THEORETICAL DISSOCIATION-ENERGY AND IONIZATION-POTENTIAL FOR THE GROUND-STATE OF THE HYDROGEN MOLECULE [J].
KOLOS, W ;
RYCHLEWSKI, J .
JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (05) :3960-3967