Abstract
A series of six-coordinate “half-sandwich” zirconocene phosphates and phosphonates have been synthesized by the reaction of Cp2ZrCl2 with (diphenyl-, dibenzyl-)phosphate and methylphenylphosphinic acid under different conditions. All of the complexes were characterized by elemental analysis, FT-IR and NMR (1H, 13C) spectroscopy. Except for complex 3, the structures of complexes 1, 2, 4, 5, and 6 were confirmed by X-ray crystallography. The structure analyses reveal that complexes 1, 2, and 3 are trinuclear complexes with fascinating μ3-oxygen bridging ligands, central to a Zr–O backbone (Cp2ZrCl2:ligand is 1:1) while complexes 4, 5, and 6 are centrosymmetric dinuclear complexes built up about the trapezoidal Zr2(μ2-OH)2 unit (Cp2ZrCl2:ligand is 1:2).
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We thank the National Natural Science Foundation of China (20971096) for financial support.
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Zhang, R., Li, C., Wang, Q. et al. Syntheses and characterizations of trinuclear and dinuclear “half-sandwich” zirconocene phosphates and phosphonates. Struct Chem 21, 745–753 (2010). https://doi.org/10.1007/s11224-010-9604-z
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DOI: https://doi.org/10.1007/s11224-010-9604-z