complex (eta 5-Me3SnC5H4)CpZrCl2 (1), accompanied by variable amounts of (eta 5-ClMe2SnC5H4)CpZrCl2 (2). The complex (1) reacts with BCl3 or with ICl to afford 2 (Sn-CH3 cleavage), but with HCl, Cp2ZrCl2 is obtained instead (Sn-Cp cleavage). Depending on the reaction conditions, treatment of either 1 or 2 with BBr3 affords (eta 5-BrMe2SnC5H4)CpZrBr2 (3) or (eta 5-Br2MeSnC5H4)CpZrBr2 (4). The reaction of
5,5-双(
三甲基锡烷基)
环戊二烯与CpZrCl3(Cp = eta 5-
C5H5)的反应提供了单
锡烷基化的茂
金属配合物(eta 5-Me3SnC5H4)CpZrCl2(1),伴随着可变量的(eta 5-ClMe2SnC5H4)CpZrCl2 (2)。配合物(1)与
BCl3或与ICl反应得到2(Sn-
CH3裂解),但与HCl代替,得到Cp2ZrCl2(Sn-Cp裂解)。根据反应条件,用BBr3处理1或2可得到(η5-BrMe2SnC5H4)CpZrBr2(3)或(η5-Br2MeSnC5H4)CpZrBr2(4)。1与过量的I2反应可得到
碘锡烷基化的络合物(η5-IMe2SnC5H4)CpZrCl2(5)。两种配合物(2.2C6H5 和4.THF)在晶体学上进行了表征。加合物4.THF在
锡附近具有扭曲的三角双锥几何形状,O-Sn长距离为2.655 A.