Synthesis of a novel tetranuclear Cu(II) complex with the dinucleating ligand #alpha#,#alpha#'-bis(N-1,4,7-triazacyclononane)-m-xylene (XYL-tacn): first crystal structure of [(CuCl)_4(XYL-tacn)_2(#mu#-Cl)_2][PF_6]_2

摘要

Reaction of the ligand #alpha#,#alpha#'-bis(N-1,4,7-triazacyclononane)-m-xylene (XYL-tacn) with copper(II) chloride and sodium hexafluorophosphate in acetonitrile/methanol leads to the assembly fo a remarkable tetranuclear copper(II) complex. The crystal structure and magnetic properties of the novel tetranuclear Cu(II) complex are reported. The complex exhibits an unusual [(CuCl)_4(#mu#-Cl)_2] binding mode with a Cu…Cu distance of 6.856(3) A.