INFRARED-ABSORPTION SPECTROSCOPY OF THE WEAKLY BONDED CO-CL2 COMPLEX

被引：19

作者：

BUNTE, SW ^{[1
]}

MILLER, JB ^{[1
]}

HUANG, ZS ^{[1
]}

VERDASCO, JE ^{[1
]}

WITTIG, C ^{[1
]}

BEAUDET, RA ^{[1
]}

机构：

[1] UNIV SO CALIF,DEPT CHEM,LOS ANGELES,CA 90089

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 11期

关键词：

D O I：

10.1021/j100190a005

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：

High-resolution rovibrational absorption spectra of the weakly bonded CO-Cl2 complex have been recorded in the 2143-cm-1 region by exciting the CO chromophore with a tunable diode laser. The spectra indicate that CO-Cl2 is linear and semirigid. By fitting the data to a linear-molecule Hamiltonian, the following constants (in cm-1) were obtained: v0 = 2149.5424 (4), B" = 0.031 5823 (39), B' = 0.031 4867 (52), D(J)" = 4.37 (25) x 10(-8), and D(J)' = 4.58 (35) x 10(-8). The distance between the CO and Cl2 centers of mass is approximately 4.78 angstrom. The orientation of CO is not determined experimentally. However, Cl2 appears to act as a classical sigma-electron acceptor, while CO behaves like a weak Lewis base, donating charge from the carbon side via the weakly antibonding 5-sigma orbital, thereby raising the CO vibrational frequency.

引用

页码：4140 / 4143

页数：4

共 16 条

[1] THE STRUCTURE AND HYPERFINE CONSTANTS OF HF-CL2 [J].