SYNTHESIS AND STRUCTURE OF A RHENIUM TETRAHEDRAL CLUSTER COMPLEX WITH THE {Re4(PO)4}4+ CORE

By a high-temperature reaction of rhenium(III) iodide and red phosphorus with an excess of sodium cyanide followed by recrystallization from an aqueous solution a new tetrahedral [{Re4(PO)4}(CN)12]8– anionic cluster complex is obtained. It is isolated as a salt of the composition Na8[{Re4(PO)4}(CN)12] 18H2O·MeOH. The structure of the obtained compound is determined by X-ray crystallography. The compound crystallizes in the monoclinic crystal system, P21/n space group, unit cell parameters a = 26.826(3) A, b = 11.4975(12) A, c = 29.141(3) A, β = 97.879(2)°, V = 8903.2(16) A3, Z = 8.