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Issue 22, 2013
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Crystallographic and solution NMR structural analyses of four hexacoordinated gallium(III) complexes based on ligands derived from 6-amino-perhydro-1,4-diazepine

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Abstract

The crystal structures are reported of four gallium(III) complexes based on two pairs of 6-substituted-6-amino-perhydro-1,4-diazepine ligands, together with a study of their solution structures examined by 1H and 71Ga NMR spectroscopy. In each case, the ligand adopts a twisted chair conformation that creates a facial array of the three ligand nitrogen atoms. The coordination geometry about each gallium(III) ion is a slightly distorted octahedron, with the 6-phenyl series being slightly more distorted than the 6-methyl analogues. Pulsed NMR experiments allow solution NMR structures to be assessed, revealing good agreement with the solid-state structures.

Graphical abstract: Crystallographic and solution NMR structural analyses of four hexacoordinated gallium(iii) complexes based on ligands derived from 6-amino-perhydro-1,4-diazepine

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Publication details

The article was received on 28 Jan 2013, accepted on 26 Feb 2013 and first published on 26 Feb 2013


Article type: Paper
DOI: 10.1039/C3DT50287B
Citation: Dalton Trans., 2013,42, 8001-8008

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    Crystallographic and solution NMR structural analyses of four hexacoordinated gallium(III) complexes based on ligands derived from 6-amino-perhydro-1,4-diazepine

    D. Parker, B. P. Waldron and D. S. Yufit, Dalton Trans., 2013, 42, 8001
    DOI: 10.1039/C3DT50287B

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