Difluorosilanethione F2Si=S by Flash Vacuum Thermolysis of (F3Si)2S and by Reaction of SiS with F2 – Matrix Studies and Ab initio Calculations
作者:Helmut Beckers、Jürgen Breidung、Hans Bürger、Ralf Köppe、Carsten Kötting、Wolfram Sander、Hansgeorg Schnöckel、Walter Thiel
DOI:10.1002/(sici)1099-0682(199911)1999:11<2013::aid-ejic2013>3.0.co;2-k
日期:1999.11
in an Ar matrix. Furthermore, 1 has been obtained by co-deposition of SiS and F2/Ar and by pyrolysis of a matrix-isolated SiS2–XeF2 complex under cryogenic conditions. All six vibrational fundamentals of 1 have been observed in the matrix IR spectrum. Ab initio calculations at the MP2 and CCSD(T) levels using large basis sets have been performed. These calculations have guided the detection of 1 and
二氟硅烷硫酮 F2Si=S (1) 已通过 (F3Si)2S 在 ≥ 500 °C 下的快速真空热解合成并被困在 Ar 基质中。此外,通过 SiS 和 F2/Ar 的共沉积以及在低温条件下热解基质分离的 SiS2-XeF2 复合物,已经获得了 1。在矩阵红外光谱中观察到 1 的所有六个振动基础。已经使用大型基组在 MP2 和 CCSD(T) 级别进行了从头算计算。这些计算指导了 1 的检测和振动分配。具有 C2v 对称性的 1 结构的最佳估计是:r(Si=S) 191.1(1) pm, r(SiF) 156.1(1) pm, ki(FSiF) 103.3(2)°。