A New Dinuclear Complex Derived from Cobaloxime Units Held Together by 3-Pyridylboronic Acid Residues

The reaction of methylaquobis(dimethylglyoximato)cobalt(III) with 3-pyridylboronic acid in CH2Cl2/CH3OH affords a dinuclear complex containing two methylcobaloxime units held together by two B(OCH3)(3-Py) residues, which is very stable in solution. The dimer is arranged around a crystallographic symmetry center so that the pendant pyridine residue of one moiety coordinates to the Co atom of the other in one axial position, the two pyridine rings being nearly coplanar.