HC3P:: results of coupled cluster calculations

被引:7
作者
Botschwina, P [1 ]
Merzliak, T [1 ]
Schulz, B [1 ]
Heyl, A [1 ]
机构
[1] Univ Gottingen, Inst Phys Chem, D-37077 Gottingen, Germany
关键词
HC3P; equilibrium structure; dipole moment; vibration-rotation coupling constants; coupled cluster calculations;
D O I
10.1016/S0022-2860(99)00259-8
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
On the basis of CCSD(T) calculations, an accurate equilibrium geometry (uncertainties in bond lengths: ca. 0.0005 Angstrom) has been established for linear HC3P. The CP equilibrium bond length is 1.5515 Angstrom and thus slightly longer than in HCP. Harmonic vibrational wavenumbers, vibration-rotation coupling constants and l-type doubling constants are reported. Accurate groundstate rotational constants are predicted for C-13 substituted species. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:301 / 306
页数:6
相关论文
共 20 条
[1]   Detection of HC11N in the cold dust cloud TMC-1 [J].
Bell, MB ;
Feldman, PA ;
Travers, MJ ;
McCarthy, MC ;
Gottlieb, CA ;
Thaddeus, P .
ASTROPHYSICAL JOURNAL, 1997, 483 (01) :L61-L64
[2]   Ab initio anharmonic force fields and spectroscopic properties for HC5N and HC5NH+, molecules of interest to astrochemistry [J].
Botschwina, P ;
Heyl, A ;
Oswald, M ;
Hirano, T .
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 1997, 53 (08) :1079-1090
[3]  
Botschwina P, 1997, MOL PHYS, V92, P381, DOI 10.1080/00268979709482108
[6]  
BOTSCHWINA P, UNPUB
[7]   PERTURBATIVE CORRECTIONS TO ACCOUNT FOR TRIPLE EXCITATIONS IN CLOSED AND OPEN-SHELL COUPLED-CLUSTER THEORIES [J].
DEEGAN, MJO ;
KNOWLES, PJ .
CHEMICAL PHYSICS LETTERS, 1994, 227 (03) :321-326
[8]   Rotational spectrum and structure of HCP [J].
Drean, P ;
Demaison, J ;
Poteau, L ;
Denis, JM .
JOURNAL OF MOLECULAR SPECTROSCOPY, 1996, 176 (01) :139-145
[10]   A COMPARISON OF THE EFFICIENCY AND ACCURACY OF THE QUADRATIC CONFIGURATION-INTERACTION (QCISD), COUPLED CLUSTER (CCSD), AND BRUECKNER COUPLED CLUSTER (BCCD) METHODS [J].
HAMPEL, C ;
PETERSON, KA ;
WERNER, HJ .
CHEMICAL PHYSICS LETTERS, 1992, 190 (1-2) :1-12