THE HIGH-RESOLUTION INFRARED-SPECTROSCOPY OF CYANOGEN DI-N-OXIDE (ONCCNO)

被引:13
作者
GUO, BJ
PASINSZKI, T
WESTWOOD, NPC
BERNATH, PF
机构
[1] UNIV GUELPH,GUELPH WATERLOO CTR GRAD WORK CHEM,DEPT CHEM & BIOCHEM,GUELPH,ON N1G 2W1,CANADA
[2] UNIV ARIZONA,DEPT CHEM,TUCSON,AZ 85721
关键词
D O I
10.1063/1.470716
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 high-resolution infrared absorption spectrum of the oxalodinitrile di-N-oxide (ONCCNO) molecule has been recorded in the gas phase with a Fourier transform spectrometer at a resolution of 0.003 cm(-1). No previous high-resolution spectra have been recorded for this semistable palindromic molecule. On the basis of the 2:1 intensity alternation in the rotational lines caused by nitrogen nuclear spin statistics, the ONCCNO molecule appears to be linear. A quasilinear structure, however, cannot be ruled out at this stage of the analysis. The nu(4) and nu(5) fundamental modes at 2246.040 55(23) cm(-1) and 1258.475 30(11) cm(-1) have been analyzed to give ground state rotational constant of B-0 = 0.042 202 10(96) cm(-1) and D-0 = 8.77(70) X 10(-10) cm(-1). By fixing the CN and NO bond lengths to 1.1993 and 1.1730 Angstrom, respectively, the C-C bond length was determined to be 1.3329 Angstrom using the B-0 value. This short C-C bond length is thus similar to that observed for a carbon-carbon double bond. (C) 1995 American Institute of Physics.
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页码:3335 / 3340
页数:6
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