Abstract
Two new mononuclear dioxomolybdenum(VI) complexes, [MoO2L1(CH3OH)] (1) and [MoO2L2(CH3OH)] (2), have been prepared by the reaction of MoO2(acac)2 with the tridentate Schiff base ligands 4-chloro-2-[(2-hydroxypropylimino)methyl]phenol (H2L1) and 4-bromo-2-[(2-hydroxypropylimino)methyl]phenol (H2L2), respectively, in methanol. The complexes were characterized by elemental analyses, infrared spectra, and single-crystal X-ray diffraction. Complex 1 crystallizes in triclinic space group with unit cell dimensions a = 6.970(2), b = 10.350(2), c = 10.570(2) Å, α = 68.680(3), β = 78.813(3), γ = 77.321(3)°, V = 687.5(3) Å3, Z = 2, R 1 = 0.0381, and wR 2 = 0.0860. Complex 2 crystallizes in triclinic space group with unit cell dimensions a = 7.075(2), b = 10.473(2), c = 10.691(2) Å, α = 68.744(3), β = 77.959(3), γ = 76.320(3)°, V = 710.8(3) Å3, Z = 2, R 1 = 0.0477, and wR 2 = 0.1171. Both complexes consist of cis-MoO2 core coordinated by a Schiff base ligand through two deprotonated hydroxyl groups and one imino nitrogen atom. The octahedral coordination around the molybdenum atom is completed by the neutral methanol ligand. Supplemental materials are available for this article. Go to the publisher's online edition of Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry to view the supplemental file.
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