Transition-metal complexes of expanded porphyrins

Acc Chem Res. 2007 May;40(5):371-9. doi: 10.1021/ar600006n. Epub 2007 Mar 31.

Abstract

Over the last 2 decades, the rapid development of new synthetic routes for the preparation of expanded porphyrin macrocycles has allowed for the exploration of a new frontier consisting of "porphyrin-like" coordination chemistry. In this Account, we summarize our exploratory forays into the still relatively poorly explored area of oligopyrrolic macrocycle metalation chemistry. Specifically, we describe our successful formation of both mono- and binuclear complexes and, in doing so, highlight the diversity of coordination modes available to expanded porphyrin-type ligands. The nature of the inserted cation, the emerging role of tautomeric equilibria, and the importance of hydrogen-bonding interactions in regulating this chemistry are also discussed.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Review

MeSH terms

  • Cations
  • Hydrogen Bonding
  • Ligands
  • Macrocyclic Compounds / chemistry*
  • Molecular Conformation
  • Organometallic Compounds / chemistry*
  • Porphyrins / chemistry*
  • Transition Elements / chemistry*

Substances

  • Cations
  • Ligands
  • Macrocyclic Compounds
  • Organometallic Compounds
  • Porphyrins
  • Transition Elements