Issue 3, 2003
From the journal:

Dalton Transactions

Dirhodium tetraacylate complexes and monovalent ligands. Adduct formation in solution as monitored by NMR spectroscopy

Zbigniew Rozwadowski,a   Shahid Malik,b   Gábor Tóth,c   Tamás Gátic  and  Helmut Duddeck*b  

* Corresponding authors

a Technical University Szczecin, Institute of Chemistry and Environmental Protection, Al. Piastów 42, PL-71-065 Szczecin, Poland

b Universität Hannover, Institut für Organische Chemie, Schneiderberg 1B, D-30167 Hannover, Germany

c Institute for General and Analytical Chemistry of the Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary

Abstract

Evidences of adduct formation between the dirhodium complex Rh2[(R)-MTPA4] (Rh–Rh; MTPA-H = Mosher acid) and various monovalent ligands L were obtained in solution by using NMR spectroscopy. Strongly binding ligands, e.g. selenoethers or nitriles, prefer L → Rh–Rh ← L adducts whereas weaker ligands, e.g. olefins with low steric hindrance, tend to form oligomers with bridging L molecules: ⋯Rh–Rh⋯L⋯Rh–Rh⋯. Larger steric congestion forces olefins to avoid bridge situations or even prohibits adduct formation at all.

Graphical abstract: Dirhodium tetraacylate complexes and monovalent ligands. Adduct formation in solution as monitored by NMR spectroscopy

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Article information

DOI
https://doi.org/10.1039/B207961E
Article type
Paper
Submitted
14 Aug 2002
Accepted
16 Dec 2002
First published
07 Jan 2003

Dalton Trans., 2003, 375-379

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Dirhodium tetraacylate complexes and monovalent ligands. Adduct formation in solution as monitored by NMR spectroscopy

Z. Rozwadowski, S. Malik, G. Tóth, T. Gáti and H. Duddeck, Dalton Trans., 2003, 375 DOI: 10.1039/B207961E

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