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2-cyclopropylglycinatobis(2,2'-bipyridyl)cobalt(III) diperchlorate and its dihydrate

Journal Article


Abstract


  • The crystal structures of 2-cyclopropylglycinatobis(2,2'-bipyridyl)cobalt(III) diperchlorate, [Co(cpg)(2,2′-bpy)2](ClO4)2 (1), and its dihydrate [Co(cpg)(2,2′-bpy)2](ClO4)2·2H 2O (2), are the first reported structures of a metal complex of 2-cyclopropylglycinate. Mixtures of the two kinds of crystals are formed from solutions that contain an excess of the δ-R/λ-S diastereoisomer. This diastereoisomer predominates in the solid state, but small amounts of the δ-S/λ-R diastereoisomer are also present, creating a disordered structure. Modelling the disorder to fit the diffraction data gives a diastereoisomeric composition of the crystals that is consistent with the nuclear magnetic resonance data.

Publication Date


  • 2002

Citation


  • Richardson, C., Telfer, S. G., & Hartshorn, R. M. (2002). 2-cyclopropylglycinatobis(2,2'-bipyridyl)cobalt(III) diperchlorate and its dihydrate. Australian Journal of Chemistry, 55(8), 539-542. doi:10.1071/CH02038

Scopus Eid


  • 2-s2.0-0036428992

Start Page


  • 539

End Page


  • 542

Volume


  • 55

Issue


  • 8

Abstract


  • The crystal structures of 2-cyclopropylglycinatobis(2,2'-bipyridyl)cobalt(III) diperchlorate, [Co(cpg)(2,2′-bpy)2](ClO4)2 (1), and its dihydrate [Co(cpg)(2,2′-bpy)2](ClO4)2·2H 2O (2), are the first reported structures of a metal complex of 2-cyclopropylglycinate. Mixtures of the two kinds of crystals are formed from solutions that contain an excess of the δ-R/λ-S diastereoisomer. This diastereoisomer predominates in the solid state, but small amounts of the δ-S/λ-R diastereoisomer are also present, creating a disordered structure. Modelling the disorder to fit the diffraction data gives a diastereoisomeric composition of the crystals that is consistent with the nuclear magnetic resonance data.

Publication Date


  • 2002

Citation


  • Richardson, C., Telfer, S. G., & Hartshorn, R. M. (2002). 2-cyclopropylglycinatobis(2,2'-bipyridyl)cobalt(III) diperchlorate and its dihydrate. Australian Journal of Chemistry, 55(8), 539-542. doi:10.1071/CH02038

Scopus Eid


  • 2-s2.0-0036428992

Start Page


  • 539

End Page


  • 542

Volume


  • 55

Issue


  • 8