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Dalton Trans. 2011 Sep 21;40(35):8776-87. doi: 10.1039/c1dt10030k. Epub 2011 Mar 31.

Using sterics to promote reactivity in fac-Re(CO)3 complexes of some 'non-innocent' NNN-pincer ligands.

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1
Department of Chemistry, Marquette University, Milwaukee, WI 53201-1881, USA.

Abstract

Two new redox active ligands based on di(2-(3-organopyrazolyl)-p-tolyl)amine have been prepared in order to investigate potential effects of steric bulk on the structures, electronic properties, or reactivity of tricarbonylrhenium(I) complexes. Replacing the hydrogens at the 3-pyrazolyl positions with alkyl groups causes significant distortion to the ligand framework due to potential interactions between these groups when bound to a fac-Re(CO)(3) moiety. The distortions effectively increase the nucleophilic character of the central amino nitrogen and ligand-centered reactivity of the metal complexes.

PMID:
21455516
DOI:
10.1039/c1dt10030k
[Indexed for MEDLINE]
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