Research Article: Bis(4-fluoro­anilinium) tetra­chloridocuprate(II)

Date Published: June 01, 2010

Publisher: International Union of Crystallography

Author(s): Min Min Zhao, Ping Ping Shi.


The crystal structure of the title compound, (C6H7FN)2[CuCl4], consists of parallel two-dimensional perovskite-type layers of corner-sharing CuCl6 octa­hedra. These are bonded together via N—H⋯Cl hydrogen bonds from the 4-fluoro­anilinium chains, which are almost perpendicular to the layers. The CuCl4 dianions have two short Cu—Cl bonds [2.2657 (15) and 2.2884 (13) Å] and two longer bonds [2.8868 (15) Å], giving highly Jahn–Teller-distorted CuCl6 octa­hedra. The Cu atoms are situated on crystallographic centers of inversion.

Partial Text

For similar ammonium salts, see: Yuan et al. (2004 ▶); Bhattacharya et al. (2004 ▶). For the ferroelectric properties of a related ammonium metal(II) salt, see: Zhang et al. (2009 ▶); Ye et al. (2009 ▶).




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