Two salts of 5-sulfosalicylic acid and 3-aminopyridine

Abstract

5-Sulfosalicylic acid (5-SSA) and 3-aminopyridine (3-APy) crystallize in the same solvent system, resulting in two kinds of 1:1 proton-transfer organic adduct, namely 3-aminopyridinium 3-carboxy-4-hydroxybenzenesulfonate monohydrate, C(5)H(7)N(2)(+).C(7)H(5)O(6)S(-).H(2)O or 3-APy.5-SSA.H(2)O, (I), and the anhydrous adduct, C(5)H(7)N(2)(+).C(7)H(5)O(6)S(-) or 3-APy.5-SSA, (II). Both compounds have extensively hydrogen-bonded three-dimensional layered polymer structures, with interlayer homo- and heterogeneous pi-pi interactions in (I) and (II), respectively.

Three-dimensional networks in 5-methylimidazolium 3-carboxy-4-hydroxybenzenesulfonate and bis(5-methylimidazolium) 3-carboxylato-4-hydroxybenzenesulfonate

“…Our interest in these materials arises from their potential to display three-dimensional structural diversity. In continuation of our studies of hydrogen-bonding networks formed with 5-H 2 SSA and Lewis bases (Meng et al, 2007), we report here our ®ndings on another two organic salts, both composed of 5-H 2 SSA and 5-methylimidazole (5-MeIm), 5-MeIm + Á5-HSSA À , (I), and (5-MeIm + ) 2 Á5-SSA 2À , (II).…”

“…Finally, neighbouring (010) two-dimensional layers are linked into a three-dimensional network by two CÐHÁ Á ÁO interactions (Table 2), each of which produces a C(11) chain running parallel to the [201] direction and generated by the c-glide plane at y = 1 4 . In comparison with the stacking pattern of sulfonic aryl and Lewis base heterocyclic rings (Meng et al, 2007), in (I) both the sulfonic aryl and imidazole rings form an up and down homogeneous arrangement, i.e. 5-HSSA À anions stack only on top of 5-HSSA À anions and 5-MeIm + cations stack only on top of 5-MeIm + cations.…”

“…Comment 5-Sulfosalicylic acid (5-H 2 SSA) and its organic complexes or salts can develop well de®ned noncovalent supramolecular architectures because of their ability to form multiple hydrogen bonds containing components of complementary arrays of hydrogen-bonding sites (Smith et al, 2004(Smith et al, , 2006Smith, Wermuth & White, 2005a,b;Smith, Wermuth & Healy, 2005;Muthiah et al, 2003;Raj et al, 2003;Fan et al, 2005;Wang et al, 2007). Our interest in these materials arises from their potential to display three-dimensional structural diversity.…”

[Hydrogen bis(1,2,4-triazole)] 1,2,4-triazolium bis(3-carboxy-4-hydroxybenzenesulfonate) 1,2,4-triazole disolvate

“…; Chen et al (2010); For co-crystals involved 5-sulfosaliyclic acid or triazole, see: Jin et al (2006); Kiviniemi et al (2000); Meng et al (2007Meng et al ( , 2008; Ye et al (2008 Table 1 Hydrogen-bond geometry (Å , ). Symmetry codes: (i) x À 1 2 ; y À 1 2 ; z; (ii) x À 1 2 ; y þ 1 2 ; z; (iii) x; y þ 1; z; (iv) Àx þ 1 2 ; Ày þ 1 2 ; Àz þ 1; (v) x; y À 1; z; (vi) Àx þ 1; Ày þ 1; Àz þ 1.…”

“…Many cocrystals and organic salts were synthesized using 5-sulfosaliyclic acid and N-containing Lewis bases (Meng et al, 2007(Meng et al, , 2008. We here report our findings on the title compound I, cf.…”