[(NONDmp)Sn]2 linked through Sn⋅⋅⋅Ar contacts and [(NONtBu)Sn]2 forming the first distannene bearing two amido ligands. In contrast, [(NONDipp)Sn] is monomeric in the solid-state. The lead complexes [(NONPh)Pb]2 and [(NONDmp)Pb]2 are isostructual with their tin analogues while [(NONtBu)Pb] is monomeric in the solid-state. Solution phase NMR spectroscopic data suggest that all [(NONR)M] compounds are monomeric
[(NON R )M] (NON=O(SiMe 2 NR) 2 ] 2−的合成和结构表征;R= t Bu, Ph, 2,6-Me 2 C 6 H 3 (Dmp), 2,描述了6- i Pr 2 C 6 H 3 (Dipp);M=Ge、Sn、Pb)。
锗配合物 [(NON Ph )Ge]、[(NON Dmp )Ge] 和 [(NON Dipp )Ge] 是单体。
锡络合物 [(NON Ph )Sn] 2 , [(NON Dmp )Sn] 2和 [(NON t Bu )Sn] 2在固态下是二聚体,[(NON Ph )Sn] 2通过桥接 N 原子形成链接,[(NON Dmp )Sn] 2通过 Sn⋅⋅⋅Ar 接触和 [(NON t Bu )Sn] ] 2形成带有两个酰胺基
配体的第一个二
锡烯。相比之下,[(NON Dipp )Sn] 在固态下是单体。
铅配合物 [(NON Ph )Pb] 2和 [(NON