Linking Low-Coordinate Ge(II) Centers via Bridging Anionic N-Heterocyclic Olefin Ligands
作者:Emanuel Hupf、Felix Kaiser、Paul A. Lummis、Matthew M. D. Roy、Robert McDonald、Michael J. Ferguson、Fritz E. Kühn、Eric Rivard
DOI:10.1021/acs.inorgchem.9b01449
日期:2020.2.3
heterocyclic manifolds. Reduction of a dimeric [RGeCl]2 species (R = anionic NHO, [(MeCNDipp)2C═CH]-; Dipp = 2,6-iPr2C6H3) did not give the expected acyclic RGeGeR analogue of an alkyne, but rather ligand migration/disproportionation transpired to yield the known diorganogermylene R2Ge and Ge metal. This process was examined computationally, and the ability of the reported anionic NHO to undergo atom migration
我们介绍了空间受限的N杂环烯烃(NHO)的大规模合成,并说明了其去质子化形式充当阴离子四电子桥联配体的能力。所产生的多中心捐赠能力已被用于紧密连接两个低氧化态的Ge(II)中心,从而形成由Ge2C2杂环歧管支持的Ge-Cl-Ge和Ge-H-Ge键合环境。二聚体[RGeCl] 2的还原(R =阴离子NHO,[(MeCNDipp)2C═CH]-; Dipp = 2,6-iPr2C6H3)没有得到炔烃的预期无环RGeGeR类似物,而是配体迁移/发生歧化产生已知的二有机锗R 2 Ge和Ge金属。此过程已通过计算进行了检查,