Four tetrairidium carbonyl clusters linked by six diphosphino ligands: synthesis and X-ray structure of ({Ir 4 (CO) 9 } 4 (dppmb) 6 ) (dppmb = 1,4-bis(diphenylphosphinomethyl)benzene

Tetrairidium carbonyl clusters are potentially useful connectors for multidimensional functionalized frameworks with organic bis-phosphines as linkers. The reaction of Ir4(CO)12 and 1,4-bis(diphenylphosphinomethyl)benzene produces an oligomeric cyclic structure, made of 4 connectors and 6 linkers, a possible intermediate in the formation of three dimensional networks.