Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Synthesis and crystal structure of the mixed lithium sodium guanidide [Li4Na2{NC(NMe2)2}6]: A stack of three (metal-nitrogen)2 dimeric rings with additional intramolecular (tertiary amine) nitrogen-lithium coordinations

Barnett, N.D.R. and Mulvey, Robert and Clegg, William and O'Neil, Paul A. (1992) Synthesis and crystal structure of the mixed lithium sodium guanidide [Li4Na2{NC(NMe2)2}6]: A stack of three (metal-nitrogen)2 dimeric rings with additional intramolecular (tertiary amine) nitrogen-lithium coordinations. Polyhedron, 11 (21). pp. 2809-2812. ISSN 0277-5387

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

The tetralithium disodium guanidide [Li4Na2{N=C(NMe2)2}6], crystallized from a 1 : 1 : 2 Bu(n)Li : Bu(n)Na : HN=C(NMe2)2 mixture, has been studied by X-ray crystallography and found to be related to the ketimide [Li4Na2{N=C(Ph)But}6], reported earlier as having a stacked-core of three (metal-nitrogen)2 ring dimers with Li+ and Na+ cations in end rings and the central ring, respectively. However, it also displays a unique feature: intramolecular donor-acceptor interactions which connect dimethylaminonitrogen atoms project from the central ring to Li+ cations in the end rings. Although these interactions are long range (average length 2.304 angstrom, cf. 2.139 angstrom for Li-N core bonds), they still significantly influence the core bonding as evidenced by an analysis of bond lengths and bond angles.

Item type: Article
ID code: 38832
Keywords: crystal structure, lithium, sodium, Chemistry, Materials Chemistry, Physical and Theoretical Chemistry, Inorganic Chemistry
Subjects: Science > Chemistry
Department: Faculty of Science > Pure and Applied Chemistry
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 30 Mar 2012 12:16
    Last modified: 05 Sep 2014 15:09
    URI: http://strathprints.strath.ac.uk/id/eprint/38832

    Actions (login required)

    View Item