Control of Iron (II) Spin States in 2, 2′: 6′, 2 ″??Terpyridine Complexes through Ligand Substitution

…, E Bill, R Dyson, R van Eldik, D Fenske…

Index: Constable, Edwin C.; Baum, Gerhard; Bill, Eckhard; Dyson, Raylene; Van Eldik, Rudi; Fenske, Dieter; Kaderli, Susan; Morris, Darrell; Neubrand, Anton; Neuburger, Markus; Smith, Diane R.; Wieghardt, Karl; Zehnder, Margareta; Zuberbuehler, Andreas D. Chemistry - A European Journal, 1999 , vol. 5, # 2 p. 498 - 508

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Citation Number: 125

Abstract

Abstract Phenyl substituents in the 6-positions of terpyridine ligands are important for controlling the spin state of their iron (II) complexes. The introduction of phenyl substituents in both the 6-and 6 ″-positions leads exclusively to the orange high-spin iron (II) complexes, whilst the presence of a single 6-phenyl substituent results in spin-crossover systems (see scheme).