An Approach to Pin Down the Solid-State Structure of the 'Turbo Grignard'

Autor:	Florian Blasberg, Hans-Wolfram Lerner, Matthias Wagner, Michael Bolte
Rok vydání:	2012
Předmět:	Chemistry Stereochemistry Dimer Organic Chemistry chemistry.chemical_element Solid state structure Oxygen Adduct Inorganic Chemistry chemistry.chemical_compound Crystallography Monomer Physical and Theoretical Chemistry Isostructural Monoclinic crystal system
Zdroj:	Organometallics. 31:1001-1005
ISSN:	1520-6041 0276-7333
DOI:	10.1021/om201080t
Popis:	Single crystals of [iPrMgCl(THF)]2[MgCl2(THF)2]2 were obtained by layering a THF solution of the “turbo Grignard” iPrMgCl·LiCl with Et2O at ambient temperature. The isolated 1:1 Grignard–MgCl2 adduct is isostructural with crystalline compounds which were obtained from pure RMgCl solutions (R = Me, tBu, Ph, Bn). The structure of [iPrMgCl(THF)]2[MgCl2(THF)2]2 reveals an open-cube motif (monoclinic, P21/c). When dioxane was added to a THF solution of iPrMgCl·LiCl, single crystals of [LiCl(THF)2]2 and [iPr2Mg(dioxane)]∞ (monoclinic, C2/c) were isolated. From 1:1 mixtures of (Me3Si)2CHMgCl (DisylMgCl) and LiCl (prepared analogously to iPrMgCl·LiCl) two different Grignard compounds, the monomer [DisylMgCl(THF)2] (monoclinic, P21) and the dimer [DisylMgCl(THF)]2 (monoclinic, P21/c), were isolated as single crystals. During our studies, two oxidation products of iPrMgCl and DisylMgCl, respectively, resulting from oxygen insertion, were obtained and structurally characterized. Colorless plates of [iPrMg(OiPr)]4 (m...
Databáze:	OpenAIRE
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