the molecules and are antiparallel in neighboring molecules. S(6)(CN)(2) reacts with titanocene pentasulfide to give S(9) and titanocene diisothiocyanate. alpha-S(9) was obtained as single crystals, the structure of which was determined by X-ray diffraction. The two independent molecules occupy sites of C(1) symmetry, but the molecular symmetry is approximately C(2), in agreement with predictions by
报道了二
氯四
硫烷的新颖合成。仔细
氯化环六
硫可制得S(4)Cl(2)(S(2)Cl(2)除外),可用于与Hg(SCN)(9)反应制备S(6)(CN)(2)( 2)。S(6)(CN)(2)的X射线衍射分析显示具有以下分子参数的非螺旋链状分子:SS键长203.4-207.4 pm,
SSS价角104.95-105.96度,SS扭转角81.2-94.5度(主题:++ +--+)。链终止的SCN基团在分子内显示平行取向,而在相邻分子中反平行。S(6)(CN)(2)与
钛茂五
硫化物反应生成S(9)和
钛茂二异
硫氰酸酯。获得的α-S(9)为单晶,其结构由X射线衍射确定。这两个独立的分子占据C(1)对称性的位点,但分子对称性约为C(2),与密度泛函和从头算MO的预测相符。分子参数:键长203.2-206.9 pm,化合价角103.7-109.7度,扭转角59.7-115.6度(基序:+ +--+ +-+-)。在