Metal complexes of the perfluoroalkyl substituted Tpn-C3F7,Me ligand

The synthesis of the perfluoroalkyl substituted tris(pyrazolyl) borate ligand Tp(n-C3F7,Me) (tris(3-(1,1,2,2,3,3,3-heptafluoropropyl)-5-methyl-pyrazolyl) borate) is reported. Its Tl, Na, and Cs salts as well as a series of transition metal complexes of the type Tp(n-C3F7,Me) (MNO3)-N-II (M = Mn, Co, Ni, Cu, Zn) and the carbonyl complex Tp(n-C3F7,Me) Cu(CO) have been prepared and characterized spectroscopically as well as by X-ray diffraction. While the ligand is expected to provide an oxidatively stable binding pocket, its utility may be compromised by its pronounced leaving group ability, causing it to be readily displaced from the metal. (C) 2009 Elsevier B. V. All rights reserved.