Abstract: | Synthesis and Properties of Heteronuclear Metal Atom Clusters Re4(CO)12[μ3-GaRe(CO)5]4 and Re2(CO)8[μ-GaRe(CO)5]2 The title compounds were prepared by the reaction of gallium halides and dirhenium decacarbonyl. Crystals of the four-membered cluster Re2(CO)8[μ-GaRe(CO)5]2 gave at 3000C with aggregation of four Re atoms to an inner Re4 tetrahedron the product Re4(CO)12(CO)[μ3-GaRe(CO)5]4and with Ga2I3 shown by mass spectroscopic measurements the molecule ion Re4(CO)16+. In tetra-hydrofuran solution the cluster Re4(CO)12[μ3-GaRe(CO)5]4 and the hydride Li[C2H5)3BH] have formed the formyl complex Li4{Re4(CO)12[μ3 -GaRe(CO)4(CHO)] 4}, which was estimated by 1H n. m. r. and i. r. spectroscopic data. Both synthesized gallium rhenium carbonyl clusters were characterized by i.r. spectroscopic measurements. The comparison of these results with those of the structurally known indium rhenium carbonyl clusters led to proposals of the molecule structure of the analogous gallium rhenium compounds. |