engleski

Synthesis, Characterization, and Crystal Structure of Mononuclear and Dinuclear Dioxomolybdenum(VI) Complexes with Tridentate Schiff-base Ligands. Part 2

Mononuclear [MoO2LD], and dinuclear [MoO2L]2 or [MoO2L]2 · D dixomolybdenum(VI) complexes have been prepared by the reaction of tridentate Schiff-base ligands L with [MoO2(acac)2]. The Schiff-base ligands have been synthesized from salicylaldehyde (1, 1a, 1c, 1d), 2-hydroxy-1- naphthaldehyde (2, 2c) and 2-hydroxy-3- methoxybenzaldehyde (3a, 3b, 3c, 3d, 3e) with 2- amino-p-cresol. All prepared complexes consist of cis-MoO22+core coordinated by Schiff-base ligand through two deprotonated hydroxyl groups and one imino nitrogen atom. The usual octahedral coordination around the molybdenum atoms is completed by the neutral ligand D (methanol, ethanol, dimethyl sulfoxide, imidazole or 4, 4′- bipyridine). All compounds were characterized by elemental analyses, IR spectroscopy and some of them by X-ray crystallography (1a, 2c, 3a, 3b, 3c and 3e).

molybdenum ; Schiff bases ; tridentate ligands ; crystal structure

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