title: Ionothermal synthesis, properties and vibrational spectra of zinc (II) complex with nicotinamide.
abstract: The zinc (II) complex with nicotinamide, (C₆H₁₁N₂)[ZnBr₃(C₆H₆N₂O)], was prepared under ionothermal condition by using the ionic liquid 1-ethyl-3-methylimidazolium bromide ([EMIM]Br) as a solvent. At the same time, [EMIM]Br also functions as a structure-directing agent, leading to a framework structure different from those obtained by the conventional methods. Single-crystal X-ray analysis revealed that the coordinated compound crystallizes in monoclinic space group P2(1)/c, and the Zn (II) ion is four-coordinated by one pyridine ring N atom and three bromide anions in a slightly distorted tetrahedron arrangement. The [EMIM](+) cations acting as the extra framework charge balancing species occupy the channels of this asymmetric unit. In the crystal structure, intermolecular NH⋯Br and NH⋯O hydrogen bonds link the molecules to form a supramolecular structure. In addition, this compound was further characterized by FT-IR and Raman spectroscopic techniques, and the observed important bands were assigned. Thermogravimetric analysis (TG), Differential Scanning Calorimetry (DSC) and fluorescent properties of solid samples were also studied at room temperature.
authors.affiliation: Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.
authors.forename: Chunyan
authors.initials: C
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, Xinxiang Vocational and Technical College, Xinxiang 453007, China.
authors.forename: Fenghua
authors.initials: F
authors.lastname: Cui
authors.affiliation: Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.
authors.forename: Heng
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China. Electronic address: xpxuan@henannu.edu.cn.
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Xuan
mesh_terms: D002152:Calorimetry, Differential Scanning; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008958:Models, Molecular; D009536:Niacinamide / Q000138:chemical synthesis / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D015032:Zinc / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D009536:Niacinamide; D015032:Zinc
keywords: Crystal structure; Ionothermal synthesis; Nicotinamide; Vibrational bands; Zinc complex