Nc. Harden et al., DINUCLEAR MOLYBDENUM AND GADOLINIUM COMPLEXES OF NEW BACK-TO-BACK B-BLINKED BIS[TRIS(PYRAZOLYL)BORATE] LIGANDS, New journal of chemistry, 22(7), 1998, pp. 661-663
Some B-B linked 'back-to-back' bis[tris(pyrazolyl)borate] bridging lig
ands [(Rpz)(3)B-B(Rpz)(3)] (where Rpz is 3-R-pyrazolyl) have been prep
ared: when R = H or Me the ligands have two terdentate compartments, a
nd have been used to prepare a variety of molybdenum complexes; when R
= 2-pyridyl, the ligand has two B-B linked hexadentate cavities which
each bond a lanthanide(III) ion.