Lanthanide complexes of a new sterically hindered potentially hexadentate podand ligand based on a tris (pyrazolyl) borate core; crystal structures, solution structures …

…, KLV Mann, JC Jeffery, JA McCleverty…

Index: Reeves, Zoe R.; Mann, Karen L. V.; Jeffery, John C.; McCleverty, Jon A.; Ward, Michael D.; Barigelletti, Francesco; Armaroli, Nicola Journal of the Chemical Society - Dalton Transactions, 1999 , # 3 p. 349 - 355

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Citation Number: 32

Abstract

The new podand ligand hydrotris [3-(6-methyl) pyridin-2-ylpyrazol-1-yl] borate [L1]–was prepared which contains three bidentate pyrazolyl/pyridine arms attached to a {BH}–head- group. This ligand differs from an earlier ligand hydrotris [3-(2-pyridyl) pyrazol-1-yl] borate [L2]–by the presence of methyl groups attached to the C6 positions of the pyridyl rings, which would interfere with each other sterically if the ligand co-ordinated in a fully ...