Structural studies on organoarsenic(V) compounds by means of chlorine-35 nuclear quadrupole resonance spectroscopy
作者:Keith B. Dillon、Roderick J. Lynch、Thomas C. Waddington
DOI:10.1039/dt9760001478
日期:——
AsPh3Cl2 indicates that they have trigonal-bipyramidal structures in the solid state, with the phenyl groups occupying equatorial positions. The mono- and di-phenyl compounds are thought to be isostructural with the corresponding phosphorus compounds. Trichlorodimethylarsenic(V) and AsMe3Cl2 also have the trigonal-bipyramidal form in the solid, with the methyl groups occupying equatorial sites, unlike their
对AsPhCl 4,AsPh 2 Cl 3和AsPh 3 Cl 2的35 Cl nqr研究表明,它们具有固态的三角双锥体结构,苯基占据了赤道位置。单苯基和二苯基化合物被认为与相应的磷化合物同构。三氯二甲基砷(V)和AsMe 3 Cl 2在固体中也具有三角双锥体形式,其中甲基占据了赤道位点,这与它们的离子性磷类似物不同。尝试通过氯化AsMeCl 2来合成AsMeCl 4会在低温下导致爆炸,并且如果存在的话,该化合物似乎极其不稳定。1:1制备了砷(v)化合物与路易斯酸X的加合物,例如BCl 3,SbCl 5或ICl;这些显示了预期的离子结构[AsR n Cl 4– n ] [XCl]。在阳离子,其中R = Me或pH值,类似于那些在类似鏻,硅烷和锗系列,并支持如(参与取代基效应d π)-Cl(p π)接合。还报告了化合物Ph 3 CCl,SiPh 3 Cl,GePh 2 Cl的氯35 nqr频率2和GePh