Heterometallic Chain Compounds of Tetrakis(µ-carboxylato)diruthenium and Tetracyanidoaurate

Heterometallic complexes of tetrakis(µ-carboxylato)diruthenium(II,III) with tetracyanidoaurate(III) [Ru2(RCOO)4Au(CN)4]n (R = CH3 (1), C2H5 (2), i-C3H7 (3), and t-C4H9 (4)) were synthesized characterized by C,H,N-elemental analysis infrared spectroscopy diffuse reflectance spectroscopy. The molecular structures determined a single-crystal X-ray diffraction method. A polymeric arrangement the Ru2(RCOO)4+ units alternately linked Au(CN)4− is formed in these complexes. trans-bridging mode unit for connecting two was observed 1 4, while cis-bridging 2 3. Magnetic susceptibility data variable temperature modeled zero-field splitting model (D 75 cm−1) presence weak antiferromagnetic coupling between RuIIRuIII (zJ −0.15~−0.10 estimated. N2-adsorption isotherms showed Type II curves SBET 0.728–2.91 m2 g−1.