Two novel symmetric homodinuclear iridium acetylacetonate complexes were synthesized via the direct reaction of 2 equivalent [(acac-O,O)2(acac-C3)Ir(III)(H2O)] with 1 equivalent of pyrazine or 4,4′-bipyridine. The structures were fully characterized by elemental analysis, 1H-NMR, and single-crystal X-ray diffraction. The structural data support that they have a highly symmetric dinuclear nature with two motifs containing iridium [(acac-O,O)2(acac-C3)Ir(III)] bridged by two nitrogen atoms of pyrazine or 4,4′-bipyridine in a trans position. Absorption spectra of both compounds were measured and purple-shifted about 78.9 nm of the metal-to-ligand charge transfer transition was observed.
Research on Chemical Intermediates – Springer Journals
Published: Jul 11, 2014
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