Novel metal complexes M(hfac)(2)(PyBTM)(2) [M = Cu-II, Zn-II; hfac = hexafluoroacetylacetonato; PyBTM = (3,5-dichloro-4-pyridyl)bis(2,4,6-trichlorophenyl)methyl radical] were prepared. Both hexacoordinated complexes had elongated octahedral geometry, in which two PyBTM molecules coordinated at the equatorial positions in Cu-II(hfac)(2)(PyBTM)(2) but at the axial positions in Zn-II(hfac)(2)(PyBTM)(2). Magnetic studies revealed an intramolecular ferromagnetic exchange interaction between the spins on PyBTM and Cu-II (J(Cu-R)/k(B) = 47 K) based on the orthogonality of the two spin orbitals.