Reactions of lithiated diphosphanes R2P-P(SiMe3)LiTHF (R = tBu, iPr) with [(PNP)TiCl2]. Two different coordination types of phosphanylphosphido ligand to the metal center. - Publication - Bridge of Knowledge

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Reactions of lithiated diphosphanes R2P-P(SiMe3)LiTHF (R = tBu, iPr) with [(PNP)TiCl2]. Two different coordination types of phosphanylphosphido ligand to the metal center.

Abstract

[(PNP)TiCl2] (PNP = N[2-PiPr2-4-methylphenyl]2) reacts with one equivalent of lithium derivative of diphosphane R2P-P(SiMe3)LinTHF (R = tBu, iPr) in toluene and forms the first complex with g1-coordination [(PNP)Ti(Cl){g1-P(SiMe3)-PtBu2}] (1) and complex with g2-coordination [(PNP)Ti(Cl){g2-P(SiMe3)-PiPr2}] (2) of phosphanylphosphido ligands to the titanium center. The similar reaction with two equivalents of tBu2P-P(SiMe3)LinTHF in toluene leads to solid 3 which contains 1 and excess of tBu2P-P(SiMe3)Li in the unit cell. In complex 2 disorder of the phosphanylphosphido ligand was observed. The disorder model shows that the phosphanylphosphido ligand coordinates to the metal center alternately as a bidentate and as a monodentate ligand.

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Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
POLYHEDRON no. 137, pages 182 - 187,
ISSN: 0277-5387
Language:
English
Publication year:
2017
Bibliographic description:
Ponikiewski Ł., Ziółkowska A., Zauliczny M., Pikies J.: Reactions of lithiated diphosphanes R2P-P(SiMe3)LiTHF (R = tBu, iPr) with [(PNP)TiCl2]. Two different coordination types of phosphanylphosphido ligand to the metal center.// POLYHEDRON. -Vol. 137, (2017), s.182-187
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.poly.2017.08.007
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