Synthesis and Structure of Potassium and Samarium Phosphine(phosphinimino)methanides

The monoanionic phosphine(phosphinimino)methanide ligand (Ph2PCHPPh2NSiMe3)- is introduced in organometallic chemistry. Starting from the established compound Ph2PCH2PPh2NSiMe3 (1) the potassium salt [K(Ph2PCHPPh2NSiMe3)] n (2) was prepared. The solid state structure of 2 shows a η 3-N−P−C heteroall...

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Bibliographic Details
Published in:Organometallics 2004-11, Vol.23 (23), p.5540-5544
Main Authors: Gamer, Michael T, Roesky, Peter W
Format: Article
Language:English
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Summary:The monoanionic phosphine(phosphinimino)methanide ligand (Ph2PCHPPh2NSiMe3)- is introduced in organometallic chemistry. Starting from the established compound Ph2PCH2PPh2NSiMe3 (1) the potassium salt [K(Ph2PCHPPh2NSiMe3)] n (2) was prepared. The solid state structure of 2 shows a η 3-N−P−C heteroallyl coordination of the ligand as well as a π-coordination of the phenyl rings to the potassium atoms. These coordination modes lead to an infinite chain in the solid state. Compound 2 was further reacted to the samarium complex [(η 5-C5Me5)2Sm(Ph2PCHPPh2NSiMe3)], in which the (Ph2PCHPPh2NSiMe3)- ligand coordinates in η 3-heteroallylic fashion via the N atom and the methine group to the center metal.
ISSN:0276-7333
1520-6041
DOI:10.1021/om049409d