THE POSSIBLE INTERSTELLAR ANION CH2CN-: SPECTROSCOPIC CONSTANTS, VIBRATIONAL FREQUENCIES, AND OTHER CONSIDERATIONS

被引：39

作者：

Fortenberry, Ryan C. ^{[1
]}

Crawford, T. Daniel ^{[2
]}

Lee, Timothy J. ^{[1
]}

机构：

[1] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[2] Virginia Tech, Dept Chem, Blacksburg, VA 24061 USA

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 762卷 / 02期

基金：

美国国家科学基金会;

关键词：

astrochemistry; infrared: ISM; ISM: lines and bands; ISM: molecules; molecular data; radio lines: ISM; ACETALDEHYDE ENOLATE ANION; BASIS-SET CONVERGENCE; QUARTIC FORCE-FIELDS; GAS-PHASE; AUTODETACHMENT SPECTROSCOPY; ASTRONOMICAL DETECTION; EXCITED-STATES; MICROWAVE; ATOMS; ISOTOPOLOGUES;

D O I：

10.1088/0004-637X/762/2/121

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The A B-1(1) <- (X) over tilde (1)A' excitation into the dipole-bound state of the cyanomethyl anion (CH2CN-) has been hypothesized as the carrier for one diffuse interstellar band. However, this particular molecular system has not been detected in the interstellar medium even though the related cyanomethyl radical and the isoelectronic ketenimine molecule have been found. In this study, we are employing the use of proven quartic force fields and second-order vibrational perturbation theory to compute accurate spectroscopic constants and fundamental vibrational frequencies for (X) over tilde (1)A' CH2CN- in order to assist in laboratory studies and astronomical observations.

引用

页数：6

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