Two-Dimensional Chain Complex Based on Diruthenium (II, III) Acetate and Tetracyanidoplatinate(II)

Abstract

Mixed-metal complex constructed from diruthenium(II,III) acetate and tetracyanidoplatinate(II), [{Ru₂(O₂ CCH₃)₄}₂Pt(CN)₄] _n (1), was synthesized and characterized. The crystal structure of 1 was determined by the synchrotron-radiation single-crystal X-ray diffraction method at 100 K. It crystallizes in the triclinic space group $P\bar {{1}}$ with a = 8.522(7) Å, b = 12.160(10) Å, c = 12.221(10) Å, α = 115.643(12), β = 101.14(2), γ = 104.46(2)°, V = 1037.5(14) ų, D _x = 1.882 g cm⁻³, and Z = 1. The R1 [ I>2σ(I)] and wR2 (all data) values are 0.1759 and 0.4753, respectively, for all 7499 independent reflections. The crystal structure revealed an alternating arrangement of Ru₂(O$_{2}\textit {CCH}_{3})_{4}^{+}$ and Pt(CN)$_{4}^{2-}$ ions in two-dimensional sheet with a porous network. Temperature dependence of magnetic susceptibility measurement (4.5–300 K) showed that a weak antiferromagnetic interaction through the tetracyanidoplatinate(II) between the Ru₂(O$_{2}\textit {CCH}_{3})_{4}^{+}$ units with g = 2.10, zJ (the exchange integral multiplied by the number of interacting neighbors) = −0.10 cm⁻¹ and D (zero-field splitting parameter) = 45 cm⁻¹. The adsorption isotherm measurement showed an adsorption property of coexistence of types I and IV with a S _BET value of 273.49 m² g⁻¹.