Synthesis, crystal structure and magnetic properties of poly[[diaqua{μ-2-[bis-(carboxyl-atometh-yl)amino]-terephthalato}-dicobalt(II)] 1.6-hydrate]. | LitMetric
College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang, Shandong, 277160, People's Republic of China.
Published: September 2021
AI Article Synopsis
Article Abstract
The asymmetric unit of the polymeric title compound {[Co(CHNO)(HO)]·1.6HO} comprises two Co ions, which are coordinated by fully deprotonated 2-aminodi-acetic terephthalic acid (adtp) and terminal water mol-ecules in distorted octa-hedral NO and O coordination environments. The title compound features tetra-nuclear Co units bridged by ::'- and :,'-carboxyl-ate groups, which are joined into ribbons carboxyl-ate bridges. The parallel adtp ligands with an alternately reversed arrangement further link adjacent Co ribbons into (010) layers, which are assembled into a three-dimensional supra-molecular network inter-molecular hydrogen bonds. The disordered water solvent mol-ecules are situated in channels parallel to [100]. Magnetic measurements and analyses reveal that the title compound displays anti-ferromagnetic behaviour. The purity of the title compound was characterized by X-ray powder diffraction.
Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
New derivatives 6a-m with benzimidazole-indole-amide scaffold were developed, synthesized, and assessed for potential inhibitory effects on α-glucosidase and acetylcholinesterase (AChE). These compounds were synthesized by various amine derivatives. With the exception of two compounds, the α-glucosidase inhibitory activities of the title derivatives were more than that of the positive control acarbose.
Lately, the entire society's focus has turned towards consuming more natural food products and the production of chemicals obtained utilising green technologies. The use of chemicals as food additives is a concern for consumers. For this reason, the search for natural and more sustainable additives is a key step to control food risks while meeting consumers' requirements.
Nelson Mandela University, Summerstrand Campus, Department of Chemistry, University Way, Summerstrand, PO Box 77000, Port Elizabeth, 6031, South Africa.
The title compound, CHO, is an α-hy-droxy-carb-oxy-lic acid whose ortho-rhom-bic polymorph has been reported earlier [Qiu (2007 ▸). , , 1819-1824]. The asymmetric unit contains two complete mol-ecules.
The title compound, CHClNO, is significantly distorted from planarity, with a twist angle between the planes through the hy-droxy-benzene and acetamide groups being 23.5 (2)°. This conformation is supported by intra-molecular C-H⋯O and N-H⋯Cl contacts.
The title compound, CHBrNO, crystallizes with two similar mol-ecules in the asymmetric unit. The extended structure features dimers linked by pairs of N-H⋯O and C-H⋯O hydrogen bonds. The HNCNO moiety of the title compound shows delocalization over the N-C-N part, as evidenced by the similar C-N bond distances.
