Supramolecular interactions in a copper(II) 4′-(4-bromophenyl)-2,2′:6′,2′′-terpyridine complex

• Published in: Acta crystallographica. Section C, Crystal structure communications Vol. 67; no. 4; pp. m81 - m84
• Main Authors: Chenneberg, Ludwig, Ferreira, Janaina G., Hanan, Garry S.
• Format: Journal Article
• Language: English
• Published: 5 Abbey Square, Chester, Cheshire CH1 2HU, England International Union of Crystallography 01.04.2011; Wiley Subscription Services, Inc
• Subjects: Chemical bonds; Chemical compounds; Copper; Crystal structure; Crystallography; Molecules
• ISSN: 0108-2701; 1600-5759
• DOI: 10.1107/S0108270111004641

The title compound, [4′‐(4‐bromophenyl)‐2,2′:6′,2′′‐terpyridine]chlorido(trifluoromethanesulfonato)copper(II), [Cu(CF3O3S)Cl(C21H14BrN3)], is a new copper complex containing a polypyridyl‐based ligand. The CuII centre is five‐coordinated in a square‐pyramidal manner by one substituted 2,2′:6′,2′′‐terpyridine ligand, one chloride ligand and a coordinated trifluoromethanesulfonate anion. The Cu—N bond lengths differ by 0.1 Å for the peripheral and central pyridine rings [2.032 (2) (mean) and 1.9345 (15) Å, respectively]. The presence of the trifluoromethanesulfonate anion coordinated to the metal centre allows Br...F halogen–halogen interactions, giving rise to the formation of a dimer about an inversion centre. This work also demonstrates that the rigidity of the ligand allows the formation of other types of nonclassical interactions (C—H...Cl and C—H...O), yielding a three‐dimensional network.