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Chem. Commun., 2010, 46, 136 - 138, DOI: 10.1039/b918912b

A short, unsupported Cu(I)Cu(I) interaction, 2.65 Å, in a dinuclear guanidine chloride complex

Gina M. Chiarella, Doris Y. Melgarejo, Alex Rozanski, Pierre Hempte, Lisa M. Perez, Christian Reber and John P. Fackler Jr.

The reaction of CuCl with the neutral guanidine Hhpp ligand (1,3,4,6,7,8-hexahydropyrimido[1,2-a]pyrimidine) yields two crystalline polymorphs of the neutral dimer, bis(1,3,4,6,7,8-hexahydropyrimido[1,2-a]pyrimidine) dichloro-di-copper(I) with the shortest distance known for a bridging unsupported copper(I)–copper(I) interaction.

Graphical abstract image for this article (ID: b918912b)