Espallargas, G. M. and Florence, A. J. and van de Streek, J. and Brammer, L. (2011) Different structural destinations: comparing reactions of [CuBr2(3-Brpy)(2)] crystals with HBr and HCl gas. CrystEngComm (13). pp. 4400-4404. ISSN 1466-8033Full text not available in this repository. (Request a copy from the Strathclyde author)
Reaction of green crystalline solid trans-[CuBr2(3-Brpy)2] 1 (3-Brpy = 3-bromopyridine) with HBr (aq) vapour yields brown crystalline salt (3-BrpyH)2[CuBr4] 2 with quantitative conversion. Notably 2 adopts a different crystal structure to the three mutually isostructural compounds (3-XpyH)2[CuCl4] (X = Cl, Br) and (3-BrpyH)2[CuBr2Cl2] which result from reaction with HCl. Crystalline product 2 has been characterised by X-ray powder diffraction and its conversion back to 1 at 370–400 K has been followed in situ by synchrotron X-ray powder diffraction. Crystalline 1 and 2 are further notable for the presence of intermolecular C–BrBr–Cu halogen bonds and (only in the case of 2) N–HBr–Cu hydrogen bonds.
|Keywords:||hydrogen bonds, intermolecular interactions, halogen bond formation, M-X, coordination polymers, salts, powder diffraction data, Therapeutics. Pharmacology|
|Subjects:||Medicine > Therapeutics. Pharmacology|
|Department:||Faculty of Science > Strathclyde Institute of Pharmacy and Biomedical Sciences|
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|Depositing user:||Pure Administrator|
|Date Deposited:||01 Aug 2012 12:56|
|Last modified:||12 Jun 2013 16:04|
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