Synthesis and crystal structures of mononuclear iridium (III) acetylacetonate complexes bearing an axial bipyridine ligand

Synthesis and crystal structures of mononuclear iridium (III) acetylacetonate complexes bearing... Three new iridium (III) acetylacetonate complexes with an axial bipyridine ligand were synthesised via the direct reaction of [bis(acac-O,O′)(acac-C3)Ir(H2O)] and the corresponding bipyridine, and their molecular structures were determined by using single-crystal X-ray diffraction. The bipyridine used was di-2-pyridylketone, 2,2′-bipyridine and 2,2′-bipyridylamine, respectively. The results revealed that only mononuclear iridium complexes were obtained, although bipyridine has two N coordinate atoms, probably due to the great steric hindrance existing around the coordinate sphere if two bis(acac-O,O′)(acac-C3)Ir units were bridged by bipyridine. All these complexes are coordinated in one axial direction by bipyridine as a mono-dentate ligand in a slightly distorted octahedral coordination geometry. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Synthesis and crystal structures of mononuclear iridium (III) acetylacetonate complexes bearing an axial bipyridine ligand

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Publisher
Springer Netherlands
Copyright
Copyright © 2012 by Springer Science+Business Media B.V.
Subject
Chemistry; Inorganic Chemistry; Catalysis; Physical Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-012-0484-2
Publisher site
See Article on Publisher Site

Abstract

Three new iridium (III) acetylacetonate complexes with an axial bipyridine ligand were synthesised via the direct reaction of [bis(acac-O,O′)(acac-C3)Ir(H2O)] and the corresponding bipyridine, and their molecular structures were determined by using single-crystal X-ray diffraction. The bipyridine used was di-2-pyridylketone, 2,2′-bipyridine and 2,2′-bipyridylamine, respectively. The results revealed that only mononuclear iridium complexes were obtained, although bipyridine has two N coordinate atoms, probably due to the great steric hindrance existing around the coordinate sphere if two bis(acac-O,O′)(acac-C3)Ir units were bridged by bipyridine. All these complexes are coordinated in one axial direction by bipyridine as a mono-dentate ligand in a slightly distorted octahedral coordination geometry.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jan 13, 2012

References

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