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Abstract
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.
Original language | English |
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Pages (from-to) | 4400-4404 |
Number of pages | 5 |
Journal | CrystEngComm |
Issue number | 13 |
DOIs | |
Publication status | Published - 2011 |
Keywords
- hydrogen bonds
- intermolecular interactions
- halogen bond formation
- M-X
- coordination polymers
- salts
- powder diffraction data
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