Microwave Spectra of 18C-species of cis, trans-Ethyl Nitrite, 13CH3CH2ONO and CH313CH2ONO

Abstract

The microwave spectra of 13C-species of cis, trans-ethyl nitrite were observed in the frequency range from 10 to 34 GHz. The following rotational constants for the ground state were determined; A B C 13CH8CH2ONO 18018. 90±0. 08 MHz 2931.14±0. 01 MHz 2604.68±0. 01 MHz CH318CH2ONO 17868.37±0.10 MHz 3008. 28±0. 01 MHz 2662.09+0. 01 MHz The rs value of C-C bond length of this isomer was calculated to be 1.517+0. 004 A. The present C-C bond length is compared with the rs (C-C) values reported for analogous molecules containing ethyl group, and the dependence of the C-C length on the electronegativity of the adjacent atom is discussed. © 1990, The Chemical Society of Japan. All rights reserved.