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β ‐Diketiminate Stabilized Magnesium Hydroxide, Heterobimetallic, and Halide Complexes: Synthesis and X‐ray Structural Studies
Author(s) -
Nembenna Sharanappa,
Singh Sanjay,
Sen Sakya S.,
Roesky Herbert W.,
Ott Holger,
Stalke Dietmar
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201000348
Subject(s) - chemistry , magnesium , amide , ligand (biochemistry) , moiety , steric effects , hydroxide , hydrolysis , polymer chemistry , medicinal chemistry , crystal structure , halide , inorganic chemistry , stereochemistry , crystallography , organic chemistry , biochemistry , receptor
The controlled hydrolysis of heteroleptic magnesium amide, LMgN(SiMe 3 ) 2 (L = CH[C(Me)N(2,6‐ i Pr 2 C 6 H 3 )] 2 ) with water afforded the corresponding hydroxide [LMg(OH)·THF] 2 as air and moisture sensitive compound. The presence of a sterically bulky β ‐diketiminate ligand prevents the self‐condensation reaction of this hydroxide complex. Single crystal X‐ray analysis shows that the hydroxide is dimeric in the solid state. Reaction of the magnesium amide or LMg(Me)·OEt 2 with LAlMe(OH) generates the heterobimetallic species containing the Mg–O–Al moiety. Additionally, the reaction of methylmagnesiumchloride with the free ligand leads to complex L′MgCl (L′ = CH[Et 2 NCH 2 CH 2 N(CMe)] 2 ). As revealed by the crystal structure, L′MgCl is a solvent free monomeric magnesium chloride complex that is analogues to the Grignard reagent.