Research Article: Bis{4-[(3,5-dimethyl-1H-pyrazol-4-yl)selan­yl]-3,5-dimethyl-1H-pyrazol-2-ium} chloride monohydrate

Date Published: July 01, 2012

Publisher: International Union of Crystallography

Author(s): Maksym Seredyuk, Vadim A. Pavlenko, Kateryna O. Znovjyak, Elzbieta Gumienna-Kontecka, Larysa Penkova.


In the title compound, 2C10H15N4Se+·Cl−·OH−, a singly protonated mol­ecule of the organic selenide participates in hydrogen bonding with neighboring mol­ecules, forming zigzag chains along [001]. The molecule adapts a cis bridging mode with a C—Se—C angle of 102.13 (15)°. π–π stacking inter­actions are observed between the closest pyrazole rings of neighboring chains [centroid–centroid distance = 3.888 (1) Å] and hydrogen bonding occurs through bridging chloride anions and hydroxide groups. Additionally, O—H⋯Cl hydrogen bonds are formed.

Partial Text

For details and applications of related pyrazoles, see: Krämer & Fritsky (2000 ▶); Fritsky et al. (2004 ▶); Kovbasyuk et al. (2004 ▶); Sachse et al. (2008 ▶); Penkova et al. (2009 ▶8). For structural studies of related bis­(1H-pyrazol-4-yl)selenides, see: Seredyuk et al. (2010a ▶). For structural studies of d-metal complexes of bis­(3,5-dimethyl-1H-pyrazol-4-yl)selenide, see: Seredyuk et al. (2007 ▶, 2009 ▶, 2010b ▶).




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