Topic
Nitrobenzene
About: Nitrobenzene is a research topic. Over the lifetime, 5285 publications have been published within this topic receiving 83368 citations. The topic is also known as: essence of mirbane & nitrobenzol.
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TL;DR: The results indicated that compound 1 is a favorable material for the effective determination and degradation of NB, which makes it a promising candidate in both monitoring water quality and treating wastewater.
Abstract: Nitrobenzene (NB) is a widespread and highly toxic organic pollutant in water, and consequently its detection and removal have attracted considerable attention. In the present study, we designed and synthesized a novel coordination polymer, [AgL0.5(NO3)]n (1), {L = 25,26,27,28-tetra[(3-pyridylmethyl)oxy]calix[4]arene}, from AgNO3 and a tetra-pyridyl-functionalized calix[4]arene ligand, which possessed a 2D network based on [Ag4L(NO3)4] units. The 1-modified glassy carbon electrode (1/GCE) exhibited good electrocatalytic activity toward the reduction of NB, offering the selective detection of NB in a wide linear range (1-2450 μM) and a low detection limit (0.62 μM). Furthermore, it displayed excellent photocatalytic activity for the degradation of NB in aqueous solution under UV light. The kinetics of the catalytic degradation reaction and the stability of the catalyst were also studied. These results indicated that compound 1 is a favorable material for the effective determination and degradation of NB, which makes it a promising candidate in both monitoring water quality and treating wastewater.
32 citations
TL;DR: In this paper, the authors investigated the extraction of micro amounts of calcium, strontium and barium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B−) in the presence of dibenzo-18-crown-6 (DB18C6, L) and showed that the equilibrium data have been explained assuming that the complexes HL+, ML2+, ML22+ and MHL23+ (M2+ = Ca2+, Sr2+, Ba2+) are extracted into the organic phase.
Abstract: Extraction of microamounts of calcium, strontium and barium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B−) in the presence of dibenzo-18-crown-6 (DB18C6, L) has been investigated. The equilibrium data have been explained assuming that the complexes HL+, ML2+, ML22+ and MHL23+ (M2+ = Ca2+, Sr2+, Ba2+) are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined.
32 citations
TL;DR: In this paper, the chemical shifts of methyl protons (τ(M−CH3) values) and the coupling constants between the methyl ions and the metal atom JM-CH3 values for dimethyltin dichloride, trimethltin chloride, and trimethyllead chloride have been measured in thirty-two organic solvents.
Abstract: The chemical shifts of methyl protons (τ(M–CH3) values) and the coupling constants between the methyl protons and the metal atom JM–CH3 values for dimethyltin dichloride, trimethyltin chloride, and trimethyllead chloride have been measured in thirty-two organic solvents. From the relation between the τ(M–CH3) and the JM–CH3 values, the solvents used here have been classified into four groups. Carbon tetrachloride is representative of the first groups. The second group consists of usual polar organic solvents which can coordinate to the metal atom. The third consists of nitrobenzene, benzonitrile, pyridine, and its derivatives among the solvents studied here. The fourth consists of alkyl- or halogen-substituted aromatic solvents. The configurations of trimethyltin chloride in these solvents have been discussed on the basis of the J119Sn−CH3 values and the intensity of the Sn–C symmetric stretching band relative to that of the asymmetric one. The effects of the temperature and the concentration of the solut...
32 citations
TL;DR: In this article, the magnetic susceptibilities, the conductivities, and the visible, absorption, and infrared spectra of some rnep complexes have been obtained and structures are proposed from this information.
Abstract: Solutions of 2-methyl-1,10-phenanthroline (rnep) with excess copper(II) salts in organic solvents yielded complexes of the formula Cu(mep)X2 (X = NO3, Cl, Br, I). These were non-electrolytes in nitrobenzene. When excess rnep was present bis- complexes of the type Cu(mep)2Cl2,6H2O, Cu(mep)2/sub>(NO3)2,H2O, and hydrated forms of the type Cu(mep)2XClO4 (X = Cl, NO3) were obtained. These were 1 : 1 electrolytes in nitrobenzene and the copper(II) ion was at least five-coordinated with the donor nitrogen atoms taking up a flattened tetrahedral arrangement. Hydrated copper(II) perchlorate with rnep in a 1 : 2 or 1 : 1 ratio yielded Cu(mep)2(ClO4)2,2H2O which is a 2 : 1 electrolyte in nitrobenzene. From a water solution of copper nitrate and rnep in the ratio 1 : 3.5, a complex Cu(mep)3(ClO>sub>4)2 precipitated upon the addition of a sodium perchlorate solution. I t was thought previously that this compound did not exist. The magnetic susceptibilities, the conductivities, and the visible, absorption, and infrared spectra of some rnep complexes have been obtained and structures are proposed from this information.
32 citations
TL;DR: Investigation of enhanced mechanism indicates the introduction of ultrasound can prevent deactivation by continuously cleaning the surface of catalyst, and can accelerate the cleavage of the bond as well as speed up the diffusion of oxidative intermediate from the heterogeneous surface to the aqueous solution due to the weakening of the Bond derived from the ultrasonic shock.
32 citations