Abstract
The crystallization and structures of a triclinic (henceforth T) (C6H9N2)2[CdBr4] and a monoclinic (henceforth M) of (C6H9N2)2[CoBr4] are reported. The crystal packing of both solids is analyzed and compared: both contain parallel chains of cations and stacks of anions. In both T and M, each [MBr4]2− is hydrogen bonded non-symmetrically to surrounding cations in a ladder chains that run along b axis, with planar cations in both structures falling in parallel to the planes to anions. In T the cation chains are further involved in classical π···π stacking, while in M the cation chains show less significant stacking, with longer repeat distance.
Index Abstract
Extensive N–H···Br hydrogen bonds link both anions and cations into chains of the ladder type parallel to the crystallographic b axis.
The crystal structures of bis(2-amino-5-methylpyridinium) tetrabromometallate(II): Intermolecular interactions in (C6H9N2)2[MBr4]; M = Cd and Co
Rawhi Al-Far and Basem Fares Ali
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Acknowledgments
Al al-Bayt University and Al-Balqa a Applied University are thanked for support. The Bruker (Siemens) SMART APEX diffraction facility was established at the University of Idaho with the assistance of the NSF-EPSCoR program and the M. J. Murdock Charitable Trust, Vancouver, WA, USA.
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Al-Far, R.H., Ali, B.F. The Crystal Structures of Bis(2-amino-5-methylpyridinium) Tetrabromometallate(II): Intermolecular Interactions in (C6H9N2)2[MBr4]; M = Cd and Co. J Chem Crystallogr 38, 373–379 (2008). https://doi.org/10.1007/s10870-007-9304-8
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DOI: https://doi.org/10.1007/s10870-007-9304-8