Cyclometalated rhodium(III) and iridium(III) complexes containing amino acids as N,O-chelates |
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| Authors: | Marion Graf |
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| Institution: | Department Chemie der Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, D-81377 München, Germany |
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| Abstract: | The synthesis of bis-cyclometalated aminocarboxylato complexes M(α-aminocarboxylato)(ptpy)2] (M = Rh, 3, 4, 5; M = Ir, 6, 7, 8), ptpy = 2-(p-tolyl)pyridinato; aminocarboxylato = glycinato, l-alaninato, l-prolinato) from {M(μ-Cl)(ptpy)2}2] (M = Rh, 1; M = Ir, 2) is described. The molecular structure of Ir(l-alaninato)(ptpy)2] (7) was confirmed by a single-crystal X-ray diffraction study. Compound 7 crystallized from methanol-iso-hexane in the space group P21. For 7 the two diastereoisomers ΔIr, SC and ΛIr, SC were found crystallizing twice per unit. Absorption and emission spectra were recorded. The rhodium compounds are weak yellow-green and the iridium species strong green emitters. |
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| Keywords: | Cyclometalated complexes Rhodium complexes Iridium complexes Amino acidato chelate complexes Crystal structure determination |
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