atoms in solution. The crystal structures of 1, 3 and 5 have been established by single crystal X-ray diffraction. The bonding in 1 differs from that in 3 but in both structures two different environments around the tin atoms are evident with the geometry around each tin atom being that of a distorted trigonal bipyramid with alkyl groups at the equatorial positions. The structure of 5 consists of chains
二
有机锡(IV)的类型的配合物[R 2的Sn(ONC(Me)的PY)} 2 O] 2(R =卜Ñ(1),PR Ñ(2),等(3)和Me(4))是由R 2 SnO与2-NC 5 H 4(Me)CNOH(5)在无
水苯-
甲苯中以1:1摩尔比进行缩合反应合成的,并通过元素分析,IR和NMR进行了表征(1 H,13 C和119 Sn)光谱。两套119角在观察
锡的
化学位移119所有这些化合物的Sn-NMR光谱表明溶液中
锡原子周围存在两种类型的环境。的晶体结构1,3和5已经通过单晶X射线衍射确定。1中的键与3中的键不同,但是在两种结构中,
锡原子周围的两个不同环境都很明显,每个
锡原子周围的几何形状是在赤道位置带有烷基的扭曲的三角锥体。5的结构由源自涉及环的氮原子的分子间氢键形成的分子链组成。