Photolysis of isothiocyanic acid HNCS in low-temperature matrices. Infrared detection of HSCN and HSNC isomers
作者:Maria Wierzejewska、Zofia Mielke
DOI:10.1016/s0009-2614(01)01180-0
日期:2001.11
A combination of matrix isolation technique and Fourier transform infrared spectroscopy has been used to study the low-temperature photochemistry of isothiocyanic acid HNCS. Near UV photolysis with a medium-pressure mercury lamp of the matrix isolated HNCS/DNCS precursor in nitrogen and argon led to the formation of two unobserved, so far, isomers: thiocyanic acid HSCN and isothiofulminic acid HSNC
结合基质分离技术和傅里叶变换红外光谱技术研究了异硫氰酸HNCS的低温光化学。在氮气和氩气中,用中压汞灯对基质分离的HNCS / DNCS前体进行近紫外光解,导致形成了两种至今未观察到的异构体:硫氰酸HSCN和异硫次膦酸HSNC及其氘代类似物。这两种物质大概都是通过两个反应通道形成的初级产物:[H⋯NCS]的形成和导致HSCN分子的氢迁移以及[HNC⋯S]的形成,然后重排为HSCN和HSNC物质。