Abstract
Herein, the synthesis of new low‐valent Group 14 phosphinidenide complexes [({SIDipp}P)2 m] exhibiting P–M pπ–pπ interactions (SIDipp=1,3‐bis(2,6‐diisopropylphenyl)‐imidazolidin‐2‐ylidene, M=Ge, Sn, Pb), is presented. These compounds were investigated by means of structural, spectroscopic, and quantum‐chemical methods. Furthermore, the monosubstituted compounds [(SIDippP)MX]2 (M=Sn, X=Cl; M=Pb, X=Br) are presented, which show dimeric structures instead of multiple bonding interaction.
Highlights
In 2010, the group of Robinson reported the synthesis of the first “parent” phosphinidene stabilized by complexation of the PH moiety with an N-heterocyclic carbene (NHC).[1]
The synthesis of phosphinidenes and the subsequent investigation of their characteristics have been a popular research area evinced by a considerable number of publications and review articles.[2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]
Compounds with less sterically demanding substituents tend to dimerize in solution or solid state.[31]
Summary
In 2010, the group of Robinson reported the synthesis of the first “parent” phosphinidene stabilized by complexation of the PH moiety with an N-heterocyclic carbene (NHC).[1]. In 2010, the group of Robinson reported the synthesis of the first “parent” phosphinidene stabilized by complexation of the PH moiety with an N-heterocyclic carbene (NHC).[1] Since the synthesis of phosphinidenes and the subsequent investigation of their characteristics have been a popular research area evinced by a considerable number of publications and review articles.[2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19] Especially main-group moieties with NHC- or rather cAAC-stabilized phosphinidenide ligands (cAAC = cyclic (alkyl)(amino)carbene) are in the spotlight of recent research.
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