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β-Alaninium tetrafluoroborate: a new salt with di-β-alaninium dimeric cation
V V Ghazaryan1, M Fleck2, A M Petrosyan1
1Institute of Applied Problems of Physics, NAS of Armenia, 25 Nersessyan Str., 0014 Yerevan, Armenia.
Abstract:
β-Alaninium tetrafluoroborate crystallizes in the monoclinic system (space group P21/n, Z=4). The asymmetric unit contains one β-alaninium cation and one tetrafluoroborate anion, in which the fluorine atoms are disordered. All β-alaninium cations are connected with the symmetry related cations via an inversion center, thus forming dimeric centrosymmetric β-Ala(+)···β-Ala(+) cations. The O···O distance (2.698(2)Å) in the dimeric cation is relatively long compared to known distances of previously reported salts with A(+)···A(+) type dimeric cations. The infrared and Raman spectra are studied.
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