Transition Metal Chemistry

, Volume 32, Issue 8, pp 1091–1095 | Cite as

Stepwise synthesis of peripherally dimetallated metallo-tetraazaporphyrins with linear and bent motifs

  • Rajeev Kumar
  • Ajay Kumar
  • Rajendra PrasadEmail author


Two new dinuclear and two new trinuclear complexes of 2,3,7,8,12,13,17,18-octakis(methylthio)tetraazaporphyrinatomagnesium(II), [Mg(OMTTAP)] were synthesized using a convenient stepwise process. These complexes possess (bpy)2RuII and Cp(PPh3)RuII metal moieties directly attached to the β-positions in the [Mg(OMTTAP)] through thioether chelation. Complexes were characterized using 1H-n.m.r., u.v.–vis and mass spectroscopic data. The peripheral binding of the two RuII units significantly influenced redox potentials of the OMTTAP core by lowering E1/2 for the OMTTAP centered oxidation and reduction processes, both, as evident from their cyclic voltammograms. The stepwise synthesis reported here demonstrates success of a convenient strategy to obtain hybrid, trimetallic, redox active chromophores with linear and bent motifs.


Porphyrin Dinuclear Complex Trinuclear Complex Trans Complex Stepwise Synthesis 
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© Springer 2007

Authors and Affiliations

  1. 1.Department of ChemistryIndian Institute of Technology RoorkeeRoorkeeIndia
  2. 2.School of Chemical SciencesThe University of the South PacificSuvaFiji

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