Crystal structure of [Cu(tmpen)](BF(4))(2) {tmpen is N,N,N′,N′-tetra­kis­[(6-methyl­pyridin-2-yl)meth­yl]ethane-1,2-di­amine}

The mononuclear copper title complex {N,N,N′,N′-tetra­kis­[(6-methyl­pyridin-2-yl)meth­yl]ethane-1,2-di­amine-κ(6) N}copper(II) bis­(tetra­fluorido­borate), [Cu(C(30)H(36)N(6))](BF(4))(2), is conveniently prepared from the reaction of Cu(BF(4))(2)·6H(2)O with N,N,N′,N′-tetra­kis­[(6-methyl­pyridin-2-yl)meth­yl]ethane-1,2-di­amine (tmpen) in aceto­nitrile at room temperature in air. The complex shows a distorted octa­hedral environment around the Cu(II) cation (site symmetry 2) and adopts the centrosymmetric space group C2/c. The presence of the 6-methyl substituent hinders the approach of the pyridine group to the Cu(II) core. The bond lengths about the Cu(II) atom are significantly longer than those of analogues without the 6-methyl substituents.