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Synthesis and characterization of two oxo-bridged oxo(arylimido) [tris(3,5-dimethylpyrazolyI)borato]molybdenum(V) complexes and crystal structure of [MoTp*(O)CI](μ-O)[MoTp*(CI)(≡NC6H 4OMe)]
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Reaction of the oxo-molybdenum(V) compound, [MoTp*(O)Cl2], [Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate] with p-methoxy and p-nitroaniline in the presence of Et3N under N2, afforded the oxo-bridged oxo(arylimido) molybdenum(V) complexes, [MoTp*(O)Cl](μ- O)[MoTp*(Cl)(≡NC6H4R)] (1, R = OMe; 2, R = NO2). The new compounds were characterized by elemental analysis, i.r., mass, and 1H-n.m.r. spectra. The single crystal X-ray crystallographic determination of [MoTp*(O)Cl](μ-O)[MoTp*(Cl) (≡NC6H4OMe)] was carried out to confirm that there is a Mo - O - Mo bridge and a near linear arylimido group in the structure.