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G. Kickelbick, M. Amirnasr, A. Khalji:
"Di-µ-iodo-bis{[bis(trans-cinnamaldehyde)ethylenediimine-κ²N,N']copper(I)";
Acta Crystallographica Section E, 58 (2002), 381 - 382.

The title complex, [Cu(µ-I)(ca₂en)]₂ [ca₂en is N,N'-bis(trans-cinnamaldehyde)ethylenediimine, C₂₀H₂₀N₂], has a dimeric structure where two copper(I) ions are doubly bridged by iodine substituents. The inversion center is located midway between the two Cu atoms. The ca₂en acts as a bidentate ligand coordinating via two N atoms to the copper. The coordination geometry around the Cu atom is a distorted tetrahedron formed by two N atoms from a bidentate diimine ligand and two iodine substituents. The distance between the two Cu atoms is 2.635 (2) Å. The ca2en ligand adopts a Z,Z configuration.