Anastasia Volosatova

East China Normal University | ECNU · State Key Laboratory of Precision Spectroscopy

The α-hydroxyethyl radical (CH3·CHOH, ²A) is a key intermediate in ethanol biochemistry, combustion, atmospheric chemistry, radiation chemistry, and astrochemistry. Experimental data on the vibrational spectrum of this radical are crucially important for reliable detection and understanding of the chemical dynamics of this species. This study repre...

In this work we report the first direct evidence for formation of the key simplest molecule with the peptide bond (acetamide) under radiation-induced transformations occurring in the CH3CN∙∙∙H2O complex isolated in an argon matrix at 6 K. The 1:1 CH3CN∙∙∙H2O intermolecular complex was obtained by deposition of CH3CN/H2O/Ar mixtures and characterize...

Acetylene and ammonia are important constituents of the interstellar medium and their coupled chemistry induced by high-energy radiation may be responsible for the formation of a variety of prebiotically important organic-nitrogen compounds. In this work, we first comprehensively characterized the vibrational spectrum of the 1:1 C 2 H 2 ∙∙∙NH 3 com...

The NH3···CO complex can be considered an important building block for cold synthetic astrochemistry leading to the formation of complex organic molecules, including key prebiotic species. In this work, we have studied the radiation-induced transformations of this complex in Ar, Kr, and Xe matrices using FTIR spectroscopy. On the basis of compariso...

Nitriles are important constituents of extraterrestrial media. Nitriles are supposed to play a crucial role in prebiotic chemistry occurring in the interstellar medium. In this work, we have investigated the low-temperature radiation-induced transformations of a 1 : 1 CH4HCN complex as a plausible precursor of the simplest nitriles using the matrix...

Hydrogen bonding between saturated alkanes and HX (X is an electronegative fragment) represents a unique type of interaction of this kind. In this work we report a first experimental and ab initio study on HCN…C2H6 complex using FTIR matrix isolation spectroscopy and MP2/CBS calculations. According to theoretical results, three forms of HCN…C2H6 ar...

The nitrogen-containing molecules of general structure C3HxN are important astrochemical species, which occur in interstellar and other extraterrestrial media. In this work, we have first demonstrated the formation of a number of nitriles and isonitriles (C2H3CN, C2H3NC, and C2H5NC) through a direct radiation-induced synthesis from the matrix isola...

Hydrogen cyanide, acetylene and ethylene, as well as the products of their reactions, were found in comets, interstellar space and atmospheres of different planets, for example, in the atmosphere of Titan, the largest satellite of Saturn. These small molecules may be involved in the processes of multistage formation of complex organic compounds and...

Photochemical decomposition of phenol with a concentration of 5 to 24 mg/L using hydrogen peroxide and ultraviolet irradiation (UV/H 2 O 2 ) was studied. Xenon flash lamp was chosen as a radiation source. It emits high-intensity continuous-spectrum radiation in a wide wavelength range from 200 to 1000 nm. The effect of the initial concentration of...

Acetonitrile and the species resulting from its dehydrogenation play an important role in the radiation-induced evolution of organic matter in space environment. In this work we report on FTIR spectroscopic studies of the degradation of isolated CH3CN and CD3CN molecules induced by prolonged X-ray irradiation in solid noble gas matrices at 5 K. The...

The transformations of isolated CH3CN molecules in various solid noble-gas matrices (Ne, Ar, Kr, and Xe) under the action of X-ray irradiation at 5 K were investigated by FTIR spectroscopy. The main products are CH3NC, CH2CNH and CH2NCH molecular isomers as well as CH2CN and CH2NC radicals. The matrix has a strong effect on the distribution of reac...