Abstract
Mixed ligand tris(pyrazolyl)borate and β-diketonate complexes have been prepared by reacting [TpPh2NiBr] with a β-diketone and then adding 1,8-diazabicycloundec-7-ene to yield [TpPh2Ni(β-dkt)] {β-dkt = hexafluoroacetylacetonate (hfac) 1, phenylbutanedionate (pbd) 2, diphenylpropanedionate (dbm) 3, tetramethylheptanedionate (tmhd) 4}. The green solids have been characterized by IR, UV–Vis, and 1H NMR spectroscopy. Crystallographic studies of [TpPh2Ni(dbm)] reveal a five-coordinate, square pyramidal nickel centre with a κ3-coordinated TpPh2 ligand and a bidentate β-diketonate ligand.
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