A short, unsupported CuI...CuI interaction, 2.65 A, in a dinuclear guanidine chloride complex.
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.
Chiarella
Gina M
GM
Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, USA. fackler@mail.chem.tamu.edu.
Melgarejo
Doris Y
DY
Rozanski
Alex
A
Hempte
Pierre
P
Perez
Lisa M
LM
Reber
Christian
C
Fackler
John P
JP
D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000737:chemistry*; D011743:Pyrimidines / Q000737:chemistry; D013059:Spectrum Analysis, Raman
C526885:1,3,4,6,7,8-hexahydro-2H-pyrimido(1,2-a)pyrimidine; D009942:Organometallic Compounds; D011743:Pyrimidines; C547237:bis(1,3,4,6,7,8-hexahydropyrimido(1,2-a)pyrimidine) dichloro-di-copper(I); D003300:Copper; C029892:cupric chloride