Supramolecular squarate and hydrogensquarate compounds with 4-amino-1,2,4-triazole, 2-aminothiazole and 2-aminobenzimidazole

YEŞİLEL O. Z., Odabasoglu M., Bueyuekguengoer O.

JOURNAL OF MOLECULAR STRUCTURE, vol.874, no.1-3, pp.151-158, 2008 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 874 Issue: 1-3
  • Publication Date: 2008
  • Doi Number: 10.1016/j.molstruc.2007.03.051
  • Journal Name: JOURNAL OF MOLECULAR STRUCTURE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.151-158
  • Keywords: squaric acid, squarate salts, 4-amino-1,2,4-triazole, 2-aminothiazole and 2-aminobenzimidazole, CRYSTAL-STRUCTURE, SPECTRAL-ANALYSIS, BONDED STRUCTURES, AMINO-ACIDS, MONOHYDRATE, DIHYDRATE, BENZIMIDAZOLES
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

Three organic amine squarate salts were synthesized and characterized by means of elemental analysis, FT-IR spectroscopy and thermal analysis (TG, DTG and DTA). The crystal structures of 4-amino-4H-1,2,4-triazolium hydrogenesquarate, (C2H5N4)(HC4O4) (1), bis(2-aminothiazolium) squarate dihydrate, (C3H5N2S)(2)(C4O4)center dot 2H(2)O (II) and bis(2-amino-IH-benzo[d]imidazolium) squarate, (C7H8N3)(2)(C4O4) (III) have also been studied. They crystallizes in the monoclinic system, space group P2(1)/c, C2/c and C2/c, respectively. The organic amine molecules link the squarate ions via N-H center dot center dot center dot O hydrogen bonds. All the Organic amine squarates show similar decomposition behaviour and decomposed in two or three thermal stages. (c) 2007 Elsevier B.V. All rights reserved.