Ghazaryan V V, Fleck M, Petrosyan A M
Institute of Applied Problems of Physics, NAS of Armenia, 25 Nersessyan Str., 0014 Yerevan, Armenia.
Institute of Mineralogy and Crystallography, University of Vienna, Althanstr. 14, A-1090 Vienna, Austria.
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Jul 5;146:214-20. doi: 10.1016/j.saa.2015.03.080. Epub 2015 Mar 12.
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.
四氟硼酸β-丙氨酸盐结晶于单斜晶系（空间群P21/n，Z = 4）。不对称单元包含一个β-丙氨酸阳离子和一个四氟硼酸根阴离子，其中氟原子无序排列。所有β-丙氨酸阳离子通过一个反演中心与对称相关的阳离子相连，从而形成二聚体中心对称的β-Ala(+)···β-Ala(+)阳离子。与先前报道的具有A(+)···A(+)型二聚体阳离子的盐的已知距离相比，二聚体阳离子中的O···O距离（2.698(2)Å）相对较长。对红外光谱和拉曼光谱进行了研究。
