Assembly of 6-aminonicotinic acid and inorganic anions into different dimensionalities: Crystal structure, absorption properties and Hirshfeld surface analysis. (9th March 2017)

• Record Type: Journal Article
• Authors: Wang, Jing-Wen; Zhang, Ya-Wen; Wang, Ming-Xin; Luo, Yang-Hui; Sun, Bai-Wang
• Is Part Of: Polyhedron. Volume 124(2017)
• Page Start: 243
• Page End: 250
• Publication Date: 2017-03-09
• Subjects: 6-Aminonicotinic acid -- Inorganic anions -- Assembly -- Absorption properties -- Molecular salt; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2016.12.045
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: The assembly of 6-aminonicotinic acid with inorganic acids (HBr, HNO3 and H3 PO4 ) has been performed, resulting in the molecular salts C6 H7 N2 O2 + ·Br − (1 ), C6 H7 N2 O2 + ·NO3 − (2 ) and C6 H7 N2 O2 + ·H2 PO4 − (3 ) with 1-D, 2-D and 3-D structures, respectively. Abstract: In the present study, the assembly of 6-aminonicotinic acid with inorganic acids (HBr, HNO3 and H3 PO4 ) has been performed, which resulted in the molecular salts C6 H7 N2 O2 + ·Br − (1 ), C6 H7 N2 O2 + ·NO3 − (2 ) and C6 H7 N2 O2 + ·H2 PO4 − (3 ), respectively. These three molecular salts have been characterized by single-crystal X-ray diffraction, differential scanning calorimetry (DSC), thermogravimetric analyses (TGA) and UV–Vis absorption spectroscopy (UV). The results revealed that molecular salt1 exhibits an infinite 1-D chain structure stabilized mainly by N–H⋯Br contacts, while2 and3 show a 2-D network and a 3-D stereoscopic framework, respectively, which are stabilized mainly by strong N–H⋯O hydrogen bonding contacts. Hirshfeld surface analysis demonstrated the presence of H⋯H, O–H⋯N, C–H⋯π and π⋯π intermolecular interactions. In addition, the UV–Vis spectra exhibit a slight blue-shift to a shorter wavelength, which suggests the clear influence of the inorganic anions.