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Issue 21, 2001
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Solvent-dependent assembly of mixed-metal N,N′-diphenylbenzamidinate oxide and alkoxide complexes

Andrew D. Bond,a  David J. Linton,a  Paul Schoolera  and  Andrew E. H. Wheatley*a 
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a Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK

Abstract

The sequential reaction of ZnMe2 with N,N′-diphenylbenzamidine (= HAm 10), LiBut and molecular oxygen affords various lithium triorganozincate species, the identity of which depend upon the solvent conditions used. In the presence of THF, the isolated product is a dimer [THF·Li(Me)OZnAm2]2  12, wherein oxygen has formally inserted into the Zn–C bond of a MeZnAm2− anion. Compound 12 is based on a (ZnO)2 ring core with exocyclic alkali metal centres. In the absence of donor solvent, crystals are obtained of both the pseudo-octahedral oxide-encapsulation complex (μ6-O)(Li2ZnAm3)2  13 and the heterobimetallic alkoxide polymer [(LiOBut)(MeZnOBut)3]∞  14. The structures of 12–14 all suggest a predilection for μ3 oxygen-capped triangulated metal arrays in oxophilic mixed Li–Zn systems.

Graphical abstract: Solvent-dependent assembly of mixed-metal N,N′-diphenylbenzamidinate oxide and alkoxide complexes

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Publication details

The article was received on 21 May 2001, accepted on 24 Aug 2001 and first published on 15 Oct 2001


Article type: Paper
DOI: 10.1039/B104444N
Citation: J. Chem. Soc., Dalton Trans., 2001,0, 3173-3178
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    Solvent-dependent assembly of mixed-metal N,N′-diphenylbenzamidinate oxide and alkoxide complexes

    A. D. Bond, D. J. Linton, P. Schooler and A. E. H. Wheatley, J. Chem. Soc., Dalton Trans., 2001, 0, 3173
    DOI: 10.1039/B104444N

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