form. The central structure of this molecule, which has almost C2v symmetry, has a trigonal bipyramid Sn2N3 unit with the nitrogen atoms occupying the equatorial plane. Each nitrogen atom has a tert‐butyl ligand and two of the N atoms are further connected by the dimethylsilyl group. There is one nitrogen atom in an almost planar environment (only bonding to tert‐butyl and two tin atoms) with a remarkable
亚
氨基亚
锡基HNSn已成功掺入组成为(Me 2 R Si–NSn)3(HNSn)的分子笼中,基团R为甲基(1)或
乙烯基(2)取代基。X射线结构分析表明2由扭曲的Sn 4 N 4立方体组成。Sn–N(H)键长[2.189(2)Å]在Sn 4 N 4杂种古巴的范围内。当储存在
甲苯溶液中时,簇1和簇2缓慢分解成对称的古巴(Me 2 R Si–NSn)4 [R= Me(3),CHCH 2(4)]和组成为HNSn的无定形且不溶的粉末。分解遵循一阶速率定律,该定律建立于2,在20°C下的半衰期为t 1/2 = 320 d。因此,化合物1和2可以看作是三个实体Me 2 R Si–NSn}与一个实体HNSn}之间相互作用的结果。我们还分离出了结晶形式的类似twist烷的Me 2 Si(NtBu)2 Sn 2 NtBu(5)。该分子的中心结构几乎具有C 2v对称,具有一个三角双锥Sn 2 N 3单元,其