5-Amino-4-methylsulfonyl-1-phenyl-1H-pyrazole

Abstract

Key indicatorsSingle-crystal X-ray study T = 293 K Mean (C-C) = 0.003 Å R factor = 0.038 wR factor = 0.105 Data-to-parameter ratio = 17.2 For details of how these key indicators were automatically derived from the article, see

(1H-Imidazole-κN3)[N-(2-oxidobenzyl)-L-leucinato-κ3O,N,O′]copper(II)

“…In (I) ( Fig. 1), the Cu atom is coordinated by the imidazole and tridentate dianionic reduced Schiff base N-(2-hydroxybenzyl)-l-leucine in a square-planar geometry (Table 1), which corresponds well to that observed in [Cu(salicylidene-Salaninato)pyrazole]pyrazole (Kettmann & Freŝová , 1993). The Cu-amine distance [Cu-N1 = 1.999 (4) Å ] is significantly longer than known Cu-imine bond lengths [1.890 (3) Å ; Kettmann & Freŝová , 1993].…”

5-Amino-1H-pyrazol-2-ium hydrogen succinate

“…Recently, the crystal structure of 3-aminopyrazolium trifluoroacetate (Yamuna et al, 2013) was reported from our research group. Some other structures of related compounds, viz., 4-[bis(4-fluorophenyl) methyl]-1-[(2E)-3-phenylprop-2-en-1-yl]piperazin-1-ium 3-carboxypropanoate (Kavitha et al, 2013), doxylamine hydrogen succinate (Parvez et al, 2001), 5-amino-4-methylsulfonyl-1-phenyl-1H-pyrazole (Kettmann et al, 2005) and ethyl 1-acetyl-3-amino-1H-pyrazole-4-carboxylate (Koziol et al, 2006) have also been reported. In continuation of our work on pyrazoles, this paper reports the crystal structure of the title salt, 5-amino-1H-pyrazol-2-ium hydrogen succinate, C 3 H 6 N 3 + .C 4 H 5 O 4 -, (I).…”

“…For succinic acid derivatives used in chemicals, food and pharmaceuticals, see: Sauer et al (2008). For related structures, see: Kavitha et al (2013); Kettmann et al (2005); Koziol et al (2006); Parvez et al (2001); Yamuna et al (2013). Table 1 Hydrogen-bond geometry (Å , ).…”