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Synthesis, structure, and electrochemical reduction of 2-(arylazo)pyridine complexes of rhodium(III)

1989; Royal Society of Chemistry; Issue: 8 Linguagem: Inglês

10.1039/dt9890001635

2050-5671

Alok Kumar Deb, Sreebrata Goswami,

Inorganic and Organometallic Chemistry

The synthesis of new halogenorhodium(III) 2-(arylazo)pyridine(L) complexes of the type [RhX2L2]ClO4·H2O (X = Cl, Br, or I; aryl = Ph, C6H4Me-m or -p) are described. From their spectral data it has been shown that the complexes are cis, trans, cis in the following sequence: Cl,Cl; N(pyridine), N(pyridine); and N(azo), N(azo). They are electroactive and display several cyclic voltammetric reductive responses on the negative side of a saturated calomel electrode. E.s.r. studies of the electrolysed solutions indicate that the electrons are added successively to the ligand centre.