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Molecular Structure of [Cu2(MeCN)2(μ-tpy)2][BPh4]2: A Helical Di-Cuprous Terpyridine Complex

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Abstract

The molecular structure of [Cu2(MeCN)2(μ-tpy)2][BPh4]2 has been determined. The two terpyridine ligands coordinate to the same Cu(I) center in a bidentate configuration, in which the copper adopted a distorted tetrahedral geometry with the four nitrogen donors. The third ring of each terpyridine ligand forms a bridge with a second Cu(I) center, whose tetrahedral coordination sphere is completed by two acetonitrile ligands. The resulting structure represents a section of a double helix. Crystal data: space group C2/c, a = 27.202(5), b = 12.995(3), c = 23.409(5) Å, β = 123.13(3)°; V = 6930(2) Å3, Z = 4, R = 0.0613, wR 2 = 0.0946.

Graphical Abstract

The molecular structure of [Cu2(MeCN)2(μ-tpy)2][BPh4]2 has been determined. The terpyridine ligands coordinate in a bidentate fashion to the same Cu center and monodentate to a second Cu center resulting in a double helical structural motif.

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Acknowledgments

Financial support for this work is provided by Trans Ionics Corporation. The Robert A. Welch Foundation is acknowledged for funding of the Texas Center for Crystallography at Rice University. We acknowledge Dr. Robert C. Schucker and Michael F. Lynch for useful discussion.

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  1. Department of Chemistry, Rice University, 6100 Main Street, Houston, TX, 77005, USA

    John J. Allen & Andrew R. Barron

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  1. John J. Allen
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  2. Andrew R. Barron
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Correspondence to Andrew R. Barron.

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Allen, J.J., Barron, A.R. Molecular Structure of [Cu2(MeCN)2(μ-tpy)2][BPh4]2: A Helical Di-Cuprous Terpyridine Complex. J Chem Crystallogr 38, 879–882 (2008). https://doi.org/10.1007/s10870-008-9456-1

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