首页> 外文期刊>Chemistry: A European journal >Generation and Spectroscopic Identification of ClCNS, ClNCS and NCCNS
【24h】

Generation and Spectroscopic Identification of ClCNS, ClNCS and NCCNS

机译:ClCNS,ClNCS和NCCNS的生成和光谱鉴定

获取原文
获取原文并翻译 | 示例
           

摘要

The photolysis of four chloro-substituted thiadiazoles (3,4-dichloro-, 3-chloro- and 3-chloro-4- fluoro-1,2,5-thiadiazole; 3,5-dichloro- 1,2,4-thiadiazole) and 3,4-dicyano-1,2,5- thiadiazole was investigated in inert solid-argon matrices at cryogenic temperatures by means of UV irradiation at selected wavelengths of 254 and 280 nm. The photolysis products were identified by mid-IR and UV spectroscopy. Evidence for the existence of three novel pseudohalides, namely, chloronitrile sulfide (ClCNS), chlorine isothiocyanate (ClNCS) and cyanogen N-sulfide (NCCNS), was provided by direct spectroscopic methods supported by quantum chemical calculations. Ground-state geometries, vibrational frequencies, IR intensities, and UV excitation energies of ClCNS, ClNCS and NCCNS were obtained from calculations using the B3LYP, CCSD(T) and SAC-CI methods and the aug-cc-pV(T+d)Z basis set.
机译:四种氯取代的噻二唑(3,4-二氯-,3-氯和3-氯-4-氟-1,2,5-噻二唑; 3,5-二氯-1,2,4-噻二唑的光解)和3,4-二氰基-1,2,5-噻二唑在惰性固体氩气中,在低温下,通过选定波长254和280 nm的UV辐射进行了研究。通过中红外和紫外光谱鉴定光解产物。通过量子化学计算支持的直接光谱法提供了三种新型假卤化物存在的证据,即氯腈硫化物(ClCNS),异硫氰酸氯(ClNCS)和氰化N-硫化物(NCCNS)。通过使用B3LYP,CCSD(T)和SAC-CI方法以及aug-cc-pV(T + d)的计算获得了ClCNS,ClNCS和NCCNS的基态几何形状,振动频率,IR强度和UV激发能。 Z基集。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号