Derivatized Pentadentate Macrocyclic Ligands and Their Transition Metal Complexes

Authors

Muhammad S. Khan, Department of Chemistry, College of Science, Sultan Qaboos University, P.O.Box 36, Al Khod 123, Muscat, Sultanate of Oman
Nawal K. Al-Rasbi, Department of Chemistry, College of Science, Sultan Qaboos University, P.O.Box 36, Al Khod 123, Muscat, Sultanate of Oman
Edwin C. Constable, Department of Chemistry, University of Cambridge, Lensfield Rd., Cambridge CB2 1EW, UK
Adrian R. Dale, Department of Chemistry, University of Cambridge, Lensfield Rd., Cambridge CB2 1EW, UK
Jack Lewis, Department of Chemistry, University of Cambridge, Lensfield Rd., Cambridge CB2 1EW, UK

Abstract

The reaction of the pendant hydroxyethyl group in the planar pentadentate macrocyclic ligand,1,11-bis(2’-hydroxyethyl)-4,8;12,16;17,21-trinitrilo-1,2,10,11-tetraazacyclohenicosa- 2,4,6,9,12,14,18,20-octaene (L2), derived from the condensation of 2,6-pyridinedialdehyde with 6,6’-bis(2’ hydroxyethylhydrazino) -2,2’-bipyridine (L1), has been investigated. Esterification reactions are facile, and the reaction of the hydroxyethyl-substituted macrocycle with thionyl chloride yields a chloroethyl derivative. Metal complexes of the new derivatized macrocyclic ligands L3-6having general formula ML3-6X2.nH2O (M = Mn, Fe, Co, Ni, Cu, Zn) are readily prepared.

Recommended Citation

Khan, Muhammad S.; Al-Rasbi, Nawal K.; Constable, Edwin C.; Dale, Adrian R.; and Lewis, Jack (2002) Derivatized Pentadentate Macrocyclic Ligands and Their Transition Metal Complexes, Sultan Qaboos University Journal For Science: Vol. 7: Iss. 2, 241-249.
DOI: https://doi.org/10.24200/squjs.vol7iss2pp241-249
Available at: https://squjs.squ.edu.om/squjs/vol7/iss2/9