Synthesis, Structure and Some Catalytic Properties of the New Trinuclear Rhenium Cluster Compound Re_3Se_3S_4Br_(13)

摘要

The reaction of Re_2O_7 with a mixed non-aqueous medium S_2Br~(2+)Se_2Br_2 at 100 °C gives Re_3Se_3S_4Br_(13): own structure type, Z= 4,space group Pnma - d~9c~5, a = 14.0301(4), b = 17.7909(4), c=10.8596(3) ?,R_1=0.0491. The crystal structure can be described as a 3D-packing of isolated trinuclear cluster molecular cation-anionic complexes [Re_3(μ_3-S)(μ-S)_3(SeBr_2)_3Br_6]~+Br~-. This compound displays a high catalytic activity in the hydrogenation of m-nitrobenzoic acid into m-aminobenzoic acid with 93 % yield in 5 % HBr aqueous solution.