Reactions of dichloro-bis-[N(1)-benzyl-2-(arylazo)imidazole] ruthenium(II) with tertiary phosphines

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The title reaction proceeds smoothly in MeOH-H2O to give the salts [RuCl(P)L′2](ClO4), H2O (1, 2) or [Ru(PP)L′2](ClO4)2, H2O (3, 4) where L′ = N(1)-benzyl-2-(arylazo)imidazole, P = PPh3, or PPh2Me, and PP = Ph2P(CH2)2PPh2 (dppe) or Ph2P(CH2)3PPh2(dppp). The complexes have been characterised by physico-chemical and spectroscopic methods.

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