(IUCr) Crystallography Journals Online

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Acta Cryst. (2005). E61, m967-m969 [ doi:10.1107/S1600536805008809 ]

The photodecomposition product -oxalato-1²O,O':2²O'',O'''-bis{bis[2-(2-pyridyl)phenyl-²C,N]iridium(III)}-acetone (1/1.974)

M. C. DeRosa, G. D. Enright, C. E. B. Evans and R. J. Crutchley

Abstract: An attempt to grow crystals of [Ir(ppy)₂(vacac)], (I), from an acetone-d₆ solution formed instead crystals of [{Ir(ppy)₂}₂( [mu] -oxalato)] acetone solvate, (II), [Ir₂(C₁₁H₈N)₄(C₂O₄)]·1.974C₃H₆O, where ppy is the phenylpyridine anion and vacac is vinylacetylacetonate. Each Ir^III ion in (II) is in a pseudo-octahedral coordination environment, where the pyridine N atoms are trans to each other and the phenyl C atoms are trans to the O atoms of the oxalate bridging ligand. There are two crystallographically independent dimer molecules, each lying on an inversion centre. It is suggested that the oxalate ligand is formed in a series of steps initiated by the aldol condensation of acetone with vacac.

Online 27 April 2005

The photodecomposition product -oxalato-12O,O':22O'',O'''-bis{bis[2-(2-pyridyl)phenyl-2C,N]iridium(III)}-acetone (1/1.974)

M. C. DeRosa, G. D. Enright, C. E. B. Evans and R. J. Crutchley

The photodecomposition product -oxalato-1²O,O':2²O'',O'''-bis{bis[2-(2-pyridyl)phenyl-²C,N]iridium(III)}-acetone (1/1.974)