Amino Group Functionalized N-Heterocyclic 1,2,4-Triazole-Derived Carbenes: Structural Diversity of Rhodium(I) Complexes

0421908 - ÚFCH JH 2014 RIV US eng J - Článek v odborném periodiku
Turek, J. - Panov, I. - Horáček, Michal - Černošek, Z. - Padělková, Z. - Růžička, A.
Amino Group Functionalized N-Heterocyclic 1,2,4-Triazole-Derived Carbenes: Structural Diversity of Rhodium(I) Complexes.
Organometallics. Roč. 32, č. 23 (2013), s. 7234-7240. ISSN 0276-7333. E-ISSN 1520-6041
Institucionální podpora: RVO:61388955
Klíčová slova: TRANSITION-METAL COMPLEXES * BIFUNCTIONAL MECHANISM * TRANSFER HYDROGENATION
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 4.253, rok: 2013

The synthesis of the amino group functionalized NHC precursor 1-tert-butyl-4-(2-((dimethylamino)methyl)-phenyl)-3-phenyl-4H-1,2,4-triazol-1-ium perchlorate has been developed. The generation and bonding properties of the NHC ligand have been evaluated in reactions toward three Rh(I) complexes—[Rh(COD)Cl]2, [Rh(cyclooctene)2Cl]2, and [Rh(ethylene)2Cl]2, respectively. For the first complex, [(NHC)RhCl(COD)], the coordination of the dangling amino group was not observed because of the fully occupied coordination neighborhood of the Rh atom. On the other hand, in the case of [(NHC)RhCl(ethylene)], [(NHC)RhCl(cyclooctene)], [(NHC)Rh(COD)]+[BF4]−, and [(NHC)RhCl(CO)] a strong intramolecular coordination of the amino nitrogen atom was revealed, thus forming the unusual seven-membered diazametallacycle. All of the products of these reactions were characterized in solution by NMR spectroscopy as well as in the solid state by X-ray diffraction analysis.
Trvalý link: http://hdl.handle.net/11104/0228185