Journal
DALTON TRANSACTIONS
Volume 42, Issue 22, Pages 8001-8008Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3dt50287b
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- Association of Commonwealth Universities
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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 H-1 and Ga-71 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.
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