The reaction of S2NAsF6 with halogens: preparation and X-ray crystal structure of bis(difluorothio)nitronium hexafluoroarsenate(V), (SF2)2NAsF6; preparation of (SBr)2NAsF6, and vibrational spectrum and normal-co-ordinate analysis of the (SX)2N+(X = Cl or Br) cations
作者:Wendell V. F. Brooks、Gregory K. MacLean、Jack Passmore、Peter S. White、Chi-Ming Wong
DOI:10.1039/dt9830001961
日期:——
Solutions of S2NAsF6 in liquid SO2 react with elemental chlorine and bromine yielding (SX)2NAsF6(X = Cl or Br), essentially quantitatively. No reaction was detected with iodine. The vibrational spectrum of (SBr)2N+ was similar to that of (SCl)2N+ of known structure, implying a similar structure for the bromine derivative. This conclusion was supported by a normal-co-ordinate analysis of (SX)2N+. The
S 2 NAsF 6在液态SO 2中的溶液与元素氯和溴反应,基本上定量地产生(SX)2 NAsF 6(X = Cl或Br)。没有检测到碘的反应。(SBr)2 N +的振动光谱类似于已知结构的(SCl)2 N +的振动光谱,这意味着溴衍生物的结构相似。(SX)2 N +的法向坐标分析支持了该结论。该分析与(SX)2 N +中的卤素原子之间的某些正相互作用是一致的,可能解释了这些阳离子的顺式平面几何形状。尝试准备(SF)2 NAsF 6失败。但是,(SF 2)2 NAsF 6是通过S 2 NAsF 6和XeF 2在液态SO 2 F 2中的反应基本上定量地合成的。通过X射线衍射确定(SF 2)2 NAsF 6的结构。晶体是正交晶体,a = 14.909(1),b = 9.843(4),c= 12.113(1)埃,Ž = 8的结构进行了改进的空间群为PBCA到常规ř的0.076为902独立反射因子
1 λ<sup>4</sup>,2-Thiazacyclohexa-1,4-dienes
作者:Walter Bludssus、Rüdiger Mews
DOI:10.1039/c39790000035
日期:——
The first [4 + 2] addition to a formal SN triple bond is found in the reaction of perfluorobutadiene with NSâF.