The first coordination complex of (5R,6R,7S)-5-(furan-2-yl)-7-phenyl-4,5,6,7-tetrahydro-[1,2,4]triazolo[1,5-a]pyrimidin-6-amine with zinc(II) acetate-chloride

The title complex, systematic name catena-poly[[[acetatochloridozinc(II)]-μ-(5R,6R,7S)-5-(furan-2-yl)-7-phenyl-4,5,6,7-tetrahydro[1,2,4]triazolo[1,5-a]pyrimidin-6-amine] monohydrate], {[Zn(C2H3O2)Cl(C15H15N5O)]·H2O} n , is the first coordination complex in which the neutral tetrahydrotriazolopyrimidine derivative acts as bridging ligand between two zinc molecules. As a result, polymeric chains of the coordination complex are found. The coordination of the zinc metal atom occurs with the lone pairs of the triazolo nitrogen atom and amino group. The positive charge of the zinc atom is compensated by the chlorine anion and deprotonated acetic acid. The coordination complex exists as a monohydrate in the crystalline phase. The water molecules bind neighbouring polymeric chains by the formation of O—H...O, O—H...Cl and N—H...O hydrogen bonds.

A Study of Electrolysis Technology for the Removal of Nicosulfuron from Dilute Aqueous Solution

Nicosulfuron is a kind of sulfonylurea herbicide used for controlling weeds in corn. In order to solve the problem of plant water with agrochemical, electrolysis was investigated for the treatment of nicosulfuron from dilute aqueous solutions. The operating varieles of time, chlorine anion, pH were experimented and the electrolytic decomposition mechanism of nicosulfuron was suggested. Acid solution was effective for the decomposition of the nicosulfuron and the existence of chloride ions lead to the formation of electrolytic reaction products, which regarded as chloronicosulfuron by HPLC-MS. The reaction is similar to free radical reaction.

One-step hydrothermal synthesis and thermochromic properties of chlorine-doped VO2(M) for smart window application

The monoclinic phase of VO2 has promising application as a smart window material because it possesses a reversible metal-to-semiconductor transformation with a critical temperature of [Formula: see text]C. The high critical temperature must be lowered to achieve a possible application. Anion doping has been widely researched as possible doping of VO2(M) with fluorine is the main option nowadays. However, other halogen elements such as chlorine have not been investigated albeit possessing possible advantages properties. In this work, we report the use of chlorine anion as doping for VO2(M) to lower its critical temperature and to enhance its thermochromic performance. The synthesis was performed using a facile one-step hydrothermal reduction of vanadium pentoxide by hydrazine at 350–[Formula: see text]C, using ammonium chloride as the source of the anion. The result showed that the optimum temperature to synthesize Cl-doped VO2(M) was [Formula: see text]C. The lowest critical temperature that can be achieved by chlorine-doped VO2(M) was at [Formula: see text]C. The thermochromic performance of Cl-doped VO2(M) was improved compared to pristine VO2(M) nanoparticle. This finding provides a novel use of chlorine-doped VO2(M) with a facile one-step hydrothermal method to synthesize chlorine-doped VO2(M) as well as the feasibility of chlorine-doped VO2(M) as a smart window material.

Transition-Metal-Free One-Pot Tandem Synthesis of 4-Quinolone and 4H-Thiochromen-4-one Derivatives Through Sequential Nucleophilic Addition–Elimination–SNAr Reaction

4-Quinolone and 4H-thiochromen-4-one derivatives are readily synthesized in a tandem one-pot manner in good to excellent yields. Starting from (Z)-β-chlorovinyl ketones, an intermolecular nucleo­philic addition of amines or sodium hydrogen sulfide to (Z)-β-chloro­vinyl ketones was followed by elimination of chlorine anion to give Z-enamine or thioenol intermediates, which can be transformed to 4-quinolone or 4H-thiochromen-4-one products through intramolecular SNAr reaction, respectively.

First-Principles Study on Hydrogen Desorption Properties of Li4BN3H10 Doped by Chlorine Anion

The hydrogen storage properties of Li4BN3H10doped by Cl anion are investigated by using first-principles method based on density functional theory. According to the calculated results of formation enthalpy and substitution enthalpy, Cl-doping may result in the substitution of H by Cl-in the hydride lattice and accordingly, a favorable thermodynamics modification. The electronic structure analysis indicates that the main peak of H-1s moves close to Fermi level when substituting H-by Cl-. The stability of hydrogen in the doped hydride is lowered compared with that in the hydride without doping, which improves the hydrogen desorption properties of the hydride.