293736-65-9Relevant academic research and scientific papers
Deprotonated iminophosphorane o-C6H4Ph2P double bond NSiMe3 as a novel ligand to stabilize a diarylstannylene and -plumbylene via side arm donation
Wingerter, Stefan,Gornitzka, Heinz,Bertermann, Rüdiger,Pandey, Sushil K.,Rocha, Jo?o,Stalke, Dietmar
, p. 3890 - 3894 (2008/10/08)
Lithiation of triphenyl(trimethylsilylimino)phosphorane Ph3P double bond NSiMe3 with MeLi gives the ortho-metalated species [Li(o-C6H4PPh2NSiMe3)]2·Et2O (1). It has all the requirements of an organometallic ligand capable of side arm donation: the deprotonated ortho phenyl carbon atom leads to metal-carbon σ bonds in reactions with metal halides, and the Ph2P double bond NSiMe3 moiety donates an electron pair to that metal via the imine nitrogen atom. In reactions with SnCl2 the Sn(II) organometallic complex [Sn(o-C6H4PPh2NSiMe3)2] (2) was obtained, while with PbCl2 a new example of the rare lead(II) organometallic complexes was obtained. In [Pb(o-C6H4PPh2NSiMe3)2] (3) the lead(II) center is bonded to the two orthocarbon atoms and additionally stabilized by two Pb←N donor bonds. In all metal complexes the Ph2P double bond NSiMe3 unit acts as a side arm donating group via nitrogen.
