Mn(II) complexes containing the polypyridylic chiral ligand (-)-pineno[5,6]bipyridine. Catalysts for oxidation reactions.
{Mononuclear and dinuclear chiral Mn(II) complexes contg. the neutral bidentate chiral N ligand (-)-pineno[5,6]bipyridine, (-)-L, were prepd. from different Mn salts. The chirality in these complexes arises from the pinene ring that was fused to the 5,6 positions of one pyridine group of the bipyridine ligand. These complexes were characterized through anal., spectroscopic (IR, UV/visible, ESI-MS) and electrochem. techniques (cyclic voltammetry). Single x-ray structure anal. revealed a five-coordinated Mn(II) ion in [{\{}MnCl((-)-L){\}}2($μ$-Cl)2] (2), [{\{}Mn((-)-L){\}}2($μ$-OAc)3](PF6) (3) and [MnCl2(H2O)((-)-L)] (4) and a six-coordinated one in [MnCl2((-)-L)2] (5), [Mn(CF3SO3)2((-)-L)2] (6) and [Mn(NO3)(H2O)((-)-L)2](NO3) (7). The magnetic properties of the binuclear compds. 2 and 3 were studied. Both compds. show a weak antiferromagnetic coupling (2
Références
- Titre
- Mn(II) complexes containing the polypyridylic chiral ligand (-)-pineno[5,6]bipyridine. Catalysts for oxidation reactions.
- Type de publication
- Article de revue
- Année de publication
- 2009
- Auteurs
- Rich, Jordi, Rodriguez Montserrat, Romero Isabel, Vaquer Lydia, Sala Xavier, Llobet Antoni, Corbella Montserrat, Collomb Marie-Noelle, and Fontrodona Xavier.
- Revue
- Dalt. Trans.
- Pagination
- 8117–8126
- ISSN
- 1477-9226
- Mots-clés
- antiferromagnetic coupling manganese pinenobipyridine complex crystal structure manganese pinenobipyridine complex electrochem oxidn manganese pinenobipyridine complex epoxidn catalyst manganese pinenobipyridine complex arom alkene manganese pinenobipyridine complex prepn structure
- DOI
- 10.1039/b906435d
Soumis le 12 avril 2018