Crystal structures of bis(4-dimethylaminopyridinium) tetrachlorocobaltate(II) and bis-[1,3-di(ammoniummethyl) benzene]etrachlorocobaltate(II)

摘要

The crystal structures consist of organoammonium cations hydrogen bonded to tetrahedral CoCl42- anions. In the 4-dimethylaminopyridinium salt, [(CH3)(2)NC5H5NH](2)CoCl4, pairs of cations hydrogen bond in an asymmetric fashion to two of the chlorines in each anion. The planar cations form two sets of pi-pi stacks, first parallel to the a axis and the second parallel to the b axis. The anions lie between these two nonintersecting sets of stacks. In contrast, for the second compound, [C6H4(CH2NH3)(2)] CoCl4, the tetrahedral CoCl42- 4 anions form layers lying parallel to the bc plane. The 1,3-di(ammoniummethyl) benzene cations crosslink adjacent anionic layers, forming a lamellar structure of alternating organic and inorganic layers. [References: 16]