Nitroso Complexes of Lower Valent Rhenium

The paper describes the isolation and properties of several rhenium complexes viz., [ReCl3 (dipy)(NO)], (ReCl3 (phen)(NO)], [ReCl(dipyMNO)](ClO4)2 and [ReCl(phen)2(NO)](ClO4)2 where dipy and phen stand for 2,2'-dipyridyl and 1,10-phenanthroline respectively. The non-electrolytes are insoluble in water and in common organic solvents but are soluble in concentrated sulphuric acid from which they can be reprecipitated unchanged. The cationic compounds are soluble in water, acetone and ethanol. All these a.re weakly paramagnetic at room temperature. The infra-red spectra of the non electrolytes show sharp bands at 1740 cm-1 (dipyridyl compound) and 1760 cm-1 (phenanthroline compound).

Keywords

ligands, isolation, paramagnetic

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