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

被引：8
|
作者：
Ponikiewski, L. [1 ]
Ziolkowska, A. [1 ]
Zauliczny, M. [1 ]
Pikies, J. [1 ]
机构：
[1] Gdansk Univ Technol, Chem Fac, Dept Inorgan Chem, 11-12 G Narutowicza Str, PL-80233 Gdansk, Poland
来源：
POLYHEDRON | 2017年 / 137卷
关键词：
Coordination chemistry; Titanium complexes; Phosphido ligands; Phosphanylphosphido ligand; Organophosphorus chemistry; P-RICH PHOSPHANES; H BOND ACTIVATION; PHOSPHINIDENE COMPLEXES; LITHIUM DERIVATIVES; TITANIUM COMPLEXES; MULTIPLE BOND; CHEMISTRY; DENSITY; REACTIVITY; SILYLPHOSPHANES;
D O I：
10.1016/j.poly.2017.08.007
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
[(PNP)TiCl2] (PNP = N[2-PiPr(2)-4-methylphenyl](2)) reacts with one equivalent of lithium derivative of diphosphane R2P-P(SiMe3)Li center dot nTHF (R = tBu, iPr) in toluene and forms the first complex with eta(1)-coordination [(PNP)Ti(Cl){eta(1)-P(SiMe3)-PtBu2)] (1) and complex with eta(2)-coordination [(PNP)Ti(Cl){eta(2)-P(SiMe3)-PiPr(2))] (2) of phosphanylphosphido ligands to the titanium center. The similar reaction with two equivalents of tBu(2)P-P(SiMe3)Li center dot nTHF in toluene leads to solid 3 which contains 1 and excess of tBu(2)P-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. (C) 2017 Elsevier Ltd. All rights reserved.
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页码：182 / 187
页数：6
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