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Iridium acetylacetonate : ウィキペディア英語版
Iridium acetylacetonate

Iridium acetylacetonate are iridium coordination complex with the formula Ir(O2C5H7)3, which is sometimes known as Ir(acac)3. The molecule has D3-symmetry.〔V. G. Isakova, I. A. Baidina, N. B. Morozova, I. K. Igumenov "γ-Halogenated iridium(III) Acetylacetonates" Polyhedron 2000, Volume 19, Pages 1097–1103. 〕 It is a yellow-orange solid that is soluble in organic solvents. Two isomers are known, both prepared from IrCl3(H2O)3 and acetylacetone. Procedures exist that favor the O6-isomer〔
James E. Collins, Michael P. Castellani, Arnold L. Rheingold, Edward J. Miller, William E. Geiger, Anne L. Rieger, Philip H. Rieger "Synthesis, Characterization, and Molecular Structure of Bis(tetraphenylcyclopentdienyl)rhodium(II)" Organometallics 1995, pp 1232–1238. 〕 and the C-bonded form.〔
==C-bonded isomer==
A second isomer of Iridium acetylacetonate is also known. In this isomer, two of the acetylacetonate ligands are bonded to Ir through carbon.〔S. M. Bischoff, R. A. Periana "Oxygen and Carbon Bound Acetylacetonato Iridium(III) Complexes"Inorganic Syntheses, 2010, Volume 35, p. 173. 〕

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