Structural Aspects of Reversible Molecular Oxygen Uptake

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Science  10 Feb 1967:
Vol. 155, Issue 3763, pp. 709-710
DOI: 10.1126/science.155.3763.709


The system IrX(CO)[P(C6H5)3]2 in benzene solution adds mo lecular oxygen reversibly if X is chlorine and irreversibly if X is iodine. The crystal structure of the complex IrIO2(CO)[P(C6H5)3]2 • CH2Cl2 is reported here and compared with a previous study of the structure of IrClO2(CO)[P(C6H5)3]2. The O—O bond length is 1.47 ± 0.02 angstroms in the irreversibly oxygenated iodo-compound and 1.30 ± 0.03 angstroms in the reversibly oxygenated chloro compound.