The electrochemical behaviour of rhodizonic acid and tetrahydroxy-1,4-benzoquinone on bare Pt and Pt surfaces covered by heavy metal monolayers deposited at underpotentials was studied in aqueous 0.5 M HClO4 solutions. It was found that Tl, Pb and Bi monolayers catalyse markedly the oxidation of...

The thermal and spectral properties of chelates of chloranilic acid, rhodizonic acid, and tetrahydroxyquinone with divalent copper, cobalt, nickel, zinc, and lead have been investigated. The chelates' properties are compared with those of naphthazarin and 2,5-dihydroxy-p-benzoquinone. Sever...

A procedure for the grafting of oxocarbon compounds is proposed by condensation reaction with a benzenediamine to obtain an attached-phenazine moieties. A technical proof of concept is given by the covalent capture of rhodizonic acid on the Norit activated carbon and potentiality for supercapaci...

The charge-transfer interactions between the electron donor 4,4′-trimethylenedipiperidine (TMDP) and the acceptors 2,3,5,6-tetrachloro-1,4-benzoquinone (chloranil), 2,4,4,6-tetrabromo-2,5-cyclohexadienone (TBCHD), 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), 7,7′,8,8′-tetracyanoquinodimet...

The addition of ortho-chloranil to the emeraldine base form of polyaniline has been found to increase the dark current and the photocurrent by three orders of magnitude. An electron transfer from polyaniline to ortho-chloranil occurs producing holes in polyaniline. Since ortho-chloranil is an el...

This paper describes a novel redox flow battery–single flow acid Cd–chloranil battery. The electrolyte of this battery for both negative electrode and positive electrode is the aqueous intermixture of H2SO4–(NH4)2SO4–CdSO4, the negative electrode is inert metal such as copper foil, and the p...

The present report deals with the theoretical investigation on ground state structure and charge transfer (CT) transitions in paracetamol (PA)/p-chloranil (CA) complex using Density Functional Theory (DFT) and Time Dependent Density Functional Theory (TD-DFT) method. It is found that CO bond len...

Ultrasonic investigation has been carried out on five binary and four ternary liquid mixtures to identify the dominance of solute–solute interactions. p-Chloranil is used as acceptor and four aromatic amines are used as donors. Primary, secondary and tertiary amines were used mainly to determin...

The production of chloranil is regarded as a potentially significant source of unintentional POPs. This research aimed to identify the contamination levels of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs), hexachlorobenzene (HxCBz), pentachlorobe...

The barbital (Bar) is one of the barbituric acid derivatives. It possesses a potent sedative-hypnotic property. Structural, thermal and morphological properties of the charge transfer (CT) products obtained from the reaction of barbital (Bar) with chloranilic acid (CLA), chloranil (CHL), TCNQ an...

The present work reports vibrational spectra and density functional theory calculations for chloranil, imidazole and their complexes. The experimentally observed infrared and Raman bands have been assigned with the help of calculated vibrational frequencies and potential energy distribution anal...

A self-made experimental system was used to study the catalytic oxidation of low-concentration coal mine gases to methanol in acetic acid solution. With Pd(OAc)2 as catalyst, addition of p-benzoquinone or chloranil in the reaction system provides a beneficial environment for activation of methan...

A new charge transfer (CT) complex is formed between the n- and π-donor 1-Benzoylpiperazine (1-BNZP) with π- acceptor p-chloranil (CHL). The CT-interaction is characterized in the defined polar solvent (acetonitile: ACN) at different temperatures. The 1:1 composition of the CT complex is prove...

Hexachlorobenzene (HCB) (CAS – 118-74-1) is considered as a persistent environmental pollutant. It is a white crystalline solid that has been historically used in agriculture and in the production of fireworks, ammunition, and synthetic rubber. Although it is not currently used in the United St...

Hexachlorobenzene (HCB) is a dioxin-like environmental pollutant, widely distributed in the environment. New research links exposure to high levels of persistent organic environmental toxicants to cardiovascular disease, however little is known about the effect of HCB on vascular function and on...

Recent researches indicate that mechanochemical treatment (MCT) is a promising method to degrade the environmental hazards, especially in the area of persistent organic pollutants (POPs) disposal. However, the mechanochemical dechlorination mechanism of POPs still needs to be further verified. I...

In epidemiological studies on the toxic effects of prenatal exposure to hexachlorobenzene (HCB), researchers report HCB concentrations, either as wet-weight or per lipid weight basis, in matrices like breast milk, and maternal and cord blood. Conversion of exposures across matrices is needed for...

Breast cancer incidence is increasing globally and exposure to endocrine disruptors has gained importance as a potential risk factor. Hexachlorobenzene (HCB) was once used as a fungicide and, despite being banned, considerable amounts are still released into the environment. HCB acts as an endoc...

Mechanochemical treatment (MCT) is a promising method for degrading hexachlorobenzene (HCB). Silicon carbide (SiC) was proposed in this study as a new additive to accelerate the reaction in MCT. The high performance of SiC was verified, and the relevant mechanism was explored. Graphite, amorphou...

Sediment represents a sink for toxic and persistent chemicals such as hexachlorobenzene (HCB) and lindane (γ-HCH). This paper investigates the possibility of reducing the risks associated with the presence of these pollutants in sediments by amending the sediment with carbon-rich materials (act...