Iridium Complexes of 2,2′‐Bidipyrrins |
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| Authors: | Martin Brring Carsten D Brandt Esther Cnsul Tejero |
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| Institution: | Martin Bröring,Carsten D. Brandt,Esther Cónsul Tejero |
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| Abstract: | The reaction of {Ir(cod)(μ‐Cl)}2] and K2CO3 or of {Ir(cod)(μ‐OMe)}2] alone with the non‐natural tetrapyrrole 2,2′‐bidipyrrin (H2BDP) yields, depending on the stoichiometry, the mononuclear complex Ir(cod)(HBDP)] or the homodinuclear complex {Ir(cod)}2(BDP)]. Both complexes react readily with carbon monoxide to yield the species Ir(CO)2(HBDP)] and {Ir(CO)2}2(BDP)], respectively. The results from NMR spectroscopy and X‐ray diffraction reveal different conformations for the tetrapyrrolic ligand in both complexes. The reaction of {Ir(coe)2(μ‐Cl)}2] with H2BDP proceeds differently and yields the macrocyclic 4e?,2H+]‐oxidized product IrCl2(9‐Meic)] (9‐Meic = monoanion of 9‐methyl‐9,10‐isocorrole), which can be addressed as an iridium analog of cobalamin. |
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| Keywords: | Iridium Porphyrinoids Bidipyrrin Conformation B12 analogs |
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