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- Title
The Formation of Hemiacetal Complexes of Rhenium(V) by Degradation of a Schiff Base.
- Authors
Barandov, Ali; Abram, Ulrich
- Abstract
Mono- and dinuclear oxidorhenium(V) complexes with hemiacetal ligands were isolated from a reaction of (NBu4)[ReOCl4] with a potentially tetradentate Schiff base prepared from (1 R,2 R)-cyclohexane-1, 2-diamine and (2-formylphenyl)diphenylphosphine in methanol. The hemiacetal is formed by solvolysis of first one imine functionality of the Schiff base, whereas the second remains intact. The resulting amine/iminophosphine coordinates as a tridentate N, N, P ligand in a dinuclear compound. Ongoing degradation of the Schiff base gives more hemiacetal (HL1a) and the final product, the monomeric complex [ReOCl(L1a)2] is formed. Cleavage of the organic framework is not observed during the reaction of (NBu4)[ReOCl4] with a related Schiff base derived from ethylene-1, 2-diamine and (2-formylphenyl)diphenylphosphine. The Schiff base reacts as a bis-bidentate N, P ligand and a dinuclear oxorhenium(V) compound with a central ethylene bridge is formed.
- Subjects
HEMIACETALS; RHENIUM compounds synthesis; SCHIFF bases; LIGAND crystallography; CYCLOHEXANE synthesis; IMINE synthesis
- Publication
Zeitschrift für Anorganische und Allgemeine Chemie, 2013, Vol 639, Issue 14, p2542
- ISSN
0044-2313
- Publication type
Article
- DOI
10.1002/zaac.201300437