Volume 630, Issue 4 pp. 585-590
Article

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

Marina Cindrić Prof.

Corresponding Author

Marina Cindrić Prof.

Zagreb/Croatia, Chemistry Department, Faculty of Science, University of Zagreb

Chemistry Department, Faculty of Science, University of Zagreb, Ul. kralja Zvonimira 8, 10000 Zagreb/Croatia, Fax: +385-1-46 11 191Search for more papers by this author
Neven Strukan

Neven Strukan

Zagreb/Croatia, Chemistry Department, Faculty of Science, University of Zagreb

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Višnja Vrdoljak

Višnja Vrdoljak

Zagreb/Croatia, Chemistry Department, Faculty of Science, University of Zagreb

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Boris Kamenar

Boris Kamenar

Zagreb/Croatia, Chemistry Department, Faculty of Science, University of Zagreb

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First published: 11 March 2004
Citations: 28

Part 1: Lit. [11]

Abstract

en

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).

Abstract

de

Synthese, Charakterisierung und Kristallstrukturen von ein- und zweikernigen Dioxomolybdän-Komplexen mit dreizähnigen Schiff-Basen-Liganden, Teil 2

Einkernige und zweikernige Typen von Dioxomolybdän(VI)-Komplexen [MoO2LD], [MoO2L]2 und [MoO2L]2 · D wurden durch Reaktion dreizähniger Schiff-Basen-Liganden L mit [MoO2(acac)2] hergestellt. Die Schiff-Basen-Liganden wurden aus Salicylaldehyd (1, 1a, 1c, 1d), 2-Hydroxy-1-naphthaldehyd (2, 2c) und 2-Hydroxy-3-methoxybenzaldehyd (3a, 3b, 3c, 3d, 3e) mit 2-Amino-p-Kresol synthetisiert. Alle Komplexe enthalten die cis-MoO22+-Gruppe, die durch zwei deprotonierte Hydroxylgruppen und ein Imino-Stickstoffatom der Schiff-Base-Liganden koordiniert ist. Die oktaedrische Koordination der Molybdänatome wird durch die Neutralliganden D (Methanol, Ethanol, Dimethylsulfoxid, Imidazol oder 4, 4′-Bipyridin) vervollständigt. Die Komplexe werden durch Elementaranalysen, IR-Spektroskopie und einige von ihnen durch Kristallstrukturanalysen (1a, 2c, 3a, 3b, 3c und 3e) charakterisiert.

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