4,4′-Bi(1H-pyrazol-2-ium) tetrachloridoaurate(III) chloride: a three-dimensional cationic cooperite-like framework with multiple pyrazolium–chloride hydrogen-bonding interactions

Author:

Domasevitch Konstantin V.

Abstract

In the title compound, (C6H8N4)[AuCl4]Cl, the 4,4′-bi(1H-pyrazol-2-ium) dication, denoted [H2bpz]2+, is situated across a centre of inversion, the [AuCl4]anion lies across a twofold axis passing through Cl—Au—Cl, and the Clanion resides on a twofold axis. Conventional N—H...Cl hydrogen bonding [N...Cl = 3.109 (3) and 3.127 (3) Å, and N—H...Cl = 151 and 155°] between [H2bpz]2+cations (square-planar node) and chloride anions (tetrahedral node), as complementary donors and acceptors of four hydrogen bonds, leads to a three-dimensional binodal four-connected framework with cooperite topology (three-letter notation pts). The framework contains channels along thecaxis housing one-dimensional stacks of square-planar [AuCl4]anions [Au—Cl = 2.2895 (10)–2.2903 (16) Å; interanion Au...Cl contact = 3.489 (2) Å], which are excluded from primary hydrogen bonding with the [H2bpz]2+tectons.

Publisher

International Union of Crystallography (IUCr)

Subject

General Biochemistry, Genetics and Molecular Biology,General Medicine

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