Synthesis and crystal structure of the octahedral cyano-bridged cluster complex β-[{Ni(NH3)5}2{Re6Te8(CN)6}]·4H2O

Abstract

The rhenium cyano-bridged cluster complex with a composition of β-[{Ni(NH3)5}2{Re6Te8(CN)6}]−4H2O is obtained and structurally characterized. The compound pound crystallizes in the P\( P\bar 1 \) triclinic space group with the unit cell parameters: a = 9.997(2) A, b = 10.423(2) A, c = 11.714(2) A, α = 100.92(3)°, β = 111.87(3)°, γ = 98.05(3)°, V = 1082.1(4) A3, Z = 1, dcalc = 4.072 g/cm3. The rhenium atoms of the {Re6Te8} cluster core are coordinated by CN ligands to form the [Re6Te8(CN)6]4− cluster; two nitrogen atoms of CN ligands trans-positioned with respect to each other are coordinated to Ni atoms in the {Ni(NH3)5}2+ fragments to form the molecular complexes of [{Ni(NH3)5}2}Re6Te8(CN)6}]. The crystal structure is the H-bonded packing of these molecular complexes and crystallization water molecules.