Synthesis and Characterization of a Binuclear Copper(II)-dipyriamethyrin Complex: [Cu2(dipyriamethyrin)(μ2-1,1-acetato)2]

James  T. Brewster; Harrison  D. Root; Hadiqa Zafar; Gregory  D. Thiabaud; Adam  C. Sedgwick; Jiaming He; Vincent  M. Lynch; Jonathan  L. Sessler

doi:10.3390/molecules25061446

Molecules (Mar 2020)

Synthesis and Characterization of a Binuclear Copper(II)-dipyriamethyrin Complex: [Cu2(dipyriamethyrin)(μ2-1,1-acetato)2]

James T. Brewster,
Harrison D. Root,
Hadiqa Zafar,
Gregory D. Thiabaud,
Adam C. Sedgwick,
Jiaming He,
Vincent M. Lynch,
Jonathan L. Sessler

Affiliations

James T. Brewster: Department of Chemistry, The University of Texas at Austin 105 E 24th Street-Stop A5300, Austin, TX 78712-1224, USA
Harrison D. Root: Department of Chemistry, The University of Texas at Austin 105 E 24th Street-Stop A5300, Austin, TX 78712-1224, USA
Hadiqa Zafar: Department of Chemistry, The University of Texas at Austin 105 E 24th Street-Stop A5300, Austin, TX 78712-1224, USA
Gregory D. Thiabaud: Department of Chemistry, The University of Texas at Austin 105 E 24th Street-Stop A5300, Austin, TX 78712-1224, USA
Adam C. Sedgwick: Department of Chemistry, The University of Texas at Austin 105 E 24th Street-Stop A5300, Austin, TX 78712-1224, USA
Jiaming He: Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
Vincent M. Lynch: Department of Chemistry, The University of Texas at Austin 105 E 24th Street-Stop A5300, Austin, TX 78712-1224, USA
Jonathan L. Sessler: Department of Chemistry, The University of Texas at Austin 105 E 24th Street-Stop A5300, Austin, TX 78712-1224, USA

DOI: https://doi.org/10.3390/molecules25061446
Journal volume & issue: Vol. 25, no. 6
p. 1446

Abstract

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The reaction between dipyriamethyrin and copper(II) acetate [Cu(OAc)2] afforded what is, to our knowledge, the first transition metal-dipyriamethyrin complex. Molecular and electronic characterization of this binuclear Cu(II) complex via EPR, UV-vis, and single crystal X-ray diffraction analysis revealed marked differences between the present constructs and previously reported binuclear copper(II) hexaphyrin species. UV-vis titration analyses provided evidence for a homotropic positive allosteric effect, wherein the binuclear species is formed without significant intermediacy of a monomeric complex.

Published in Molecules

ISSN: 1420-3049 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/molecules

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