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A series of complexes of formula Ni(η5-C5H5)(PR3)(SC6H4NCHC6H4X-4′) (R = Ph, Bu; X = F, Cl, Br, CH3, OH, H) has been isolated from the reactions of Ni(η5-C5H5)(PPh3)Cl or the bromo derivative, the thiol Schiff base ligands, 4-HSC6H4NCHC6H4X-4′, and triethylamine. Preliminary thermal analysis data indicate that the PBu3 complexes could exhibit liquid crystalline behaviour. Electrochemistry of the PPh3 compounds gave irreversible redox couples, in contrast to the quasi-reversibility of the PBu3 compounds.
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Nevondo et al. (2000) studied this question.
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