The oxidation of hydrocarbons different structures under the same conditions is an important stage in study chemical properties both themselves and catalysts. In a 50% H2O2/Cu2Cl4·2DMG/CH3CN system, where DMG dimethylglyoxime (Butane-2,3-dione dioxime), at 50 °C or similar conditions, we oxidized eleven RH structures: mono-, bi- tri-cyclic, framework aromatic. To compare composition products th...

Abstract This work presents a simple method for partitioning the bond‐additive and atoms‐pair‐additive distance‐based topological indices of plane graphs into sum contributions inner faces. The proposed is applied to decompose several (Wiener, hyper‐Wiener, Tratch‐Stankevich‐Zefirov, Balaban, Szeged indices) ring series benzenoid systems. It was found that employed scheme providing an accurate ...

The design of benign and safe hydrogen storage systems is the priority in development new energy carriers. a liquid or compressed state, as well metal hydrides adsorbents, depends on pressure temperature under normal conditions does not meet criteria target capacity, consumption for safety. chemical compounds which it naturally included composition only alternative. Aromatic hydrocarbons capabl...

Aerosols containing aliphatic hydrocarbons play a substantial role in the urban atmosphere. Cyclic alkanes constitute a large fraction of aliphatic hydrocarbon emissions originating from incomplete combustion of diesel fuel and motor oil. In the present study, cholestane (C27H48) is used as a model system to examine the OH-initiated heterogeneous oxidation pathways of cyclic alkanes in a photoc...

Structures and stability of an extended series of bipyramidal, sandwich and sandwich-bipyramidal mixed complexes formed by conjugated cyclic hydrocarbons (CH)n with s(Li, Na, K, Be, Mg, Ca) and d(Cr, Mn, Fe) metals have been studied using DFT B3LYP/6-311+G(df,p) calculations. Stable structures of the compounds satisfy a general (6n + 6d + 12c) electron-count rule, where n stands for total numbe...

A facile one-pot benzannulation strategy involving phosphine-3-alkyl allenoate zwitterions and cyclic 1,2-diones is described. The strategy is effectively utilized in the synthesis of fluoranthenes and benzo[a]aceanthrylenes with impressive photophysical properties. This is the first report on an intermolecular benzannulation using a 3-alkyl allenoate as a four carbon synthon.

Relative strengths of surface interaction for individual carbon atoms in acyclic and cyclic hydrocarbons adsorbed on alumina surfaces are determined using chemically resolved (13)C nuclear magnetic resonance (NMR) T1 relaxation times. The ratio of relaxation times for the adsorbed atoms T1,ads to the bulk liquid relaxation time T1,bulk provides an indication of the mobility of the atom. Hence a...

Reliable delineation of aquatic toxicity cut-offs for poorly soluble hydrocarbons is lacking. In this study, vapor and passive dosing methods were applied in limit tests with algae daphnids to evaluate the presence or absence chronic effects at exposures corresponding water solubility representative from five structural classes: branched alkanes, mono, di, polynaphthenic (cyclic) alkanes monoar...