Synthesis and crystal structure of a supramolecular adduct of the cubane cluster [CIPdMo3Se4(H2O)7Cl2]+ with macrocyclic cavitand cucurbituril

A new heterometallic selenide-bridged 60-electron complex containing the cubane cluster fragment [M03(μ3-Se)4Pd]4τ was prepared by heating a solution of [Mo3Se4(H2O)9]Cl4 and palladium black in 2M HCl. The cluster complex was isolated from aqueous solutions as a hydrolytically stable supramolecular adduct with macrocyclic cavitand cucurbituril. The molecular and crystal structure of {[ClPdMo3Se4(H2O)7Cl2](C36H36N24O12)Cl}·7H2O were established by X-ray diffraction analysis.