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Amino-substituted thio(seleno)acrylamides were synthesized in a study and their (super1)H and (super 13)C NMR spectra assigned. Both the NMR data and the results of theoretical calculations at the ab initio level of theory were used to explain the adopted structures of the compounds in terms of E/Z isomerism, and s-cis/s-trans configuration.

Carbonyl core (C 1S, O1S) --> pi c=o transitions are distinctive in the near-edge X-ray absorption fine structure (NEXAFS) spectra of organic molecules. The chemical sensitivity of these features in C 1s and O 1s NEXAFS spectra is explored for a series of polymers containing the carbonyl group.

The combination of infrared, FT-Raman and inelastic neutron scattering spectrodcopies to test and extend previous assignments. The FT-Raman spectra show all of the carbonyl stretching modes for the first time and these are assigned by comparison of the DFT calculations.

The article explains the synthesis, as well as the properties of a ratiometric fluorescent chemodosimeter, which is shown to contain a guanidiniocarbonylpyrrole and a 9-(aminomethyl)anthracene moiety. The selective recognition of the compound for sulfite in the aqueous solution is also discussed.

The studies on NIS/AgOTf-promoted glycosylations with ethyl 2,3-N,O-carbonyl-2-deoxy-1-thio-[beta]-D-glucopyranoside donors performed by using either [alpha]- or [beta]-selectivity is reported. NMR-monitored glycosylation and anomerization experiments revealed that the initial formation of [beta]-linkage, which anomerizes through an intramolecular mechanism involved an endocyclic C-O bond cleavage, to the [alpha]-linkage.

An ultrafast broadband transient absorption spectroscopy was used to study the direct photolysis of oxetane DMT-BP, which is the oxetane adduct of 1,3-dimethylthymine (DMT) with benzophenone (BP). The results offer insight into the cycloreversion reaction that occurs in a stepwise manner on a singlet excited-state followed by intersystem crossing (ISC) to form the triplet carbonyl product.

A group of robust and easy-to-make photolabile protecting groups (PPGs) for carbonyl compounds is developed. The sequential removal of different PPGs is achieved by controlling irradiation wavelength.

The frequency-resolved sub-picosecond infrared spectroscopy is employed to study the ultrafast dynamics of the carbonyl CO stretching vibration in acetic acid in aqueous solution. The two acetic acid components are shown to exhibit almost similar bond shape and time constants.

A simple and highly efficient method for the rearrangement of bromohydrins mediated by [Et.sub.2]Zn to prepare carbonyl compounds is described. The method helps to obtained acyclic and cyclic bromohydrins and a variety of ring-expansive and -contractive carbonyl compounds.

A scalable synthesis of 2,2-difluorohomopropargyl esters is obtained by using a magnesium-promoted Barbier reaction of substituted difluoropropargyl bromides with alkyl chloroformates. The [2 + 2 + 2] cycloaddition of alkynes with fluorinated 1,7-diyne amides has given 4,4-difluoro-1,4-dihydro-3(2H)-isoquinolinone derivatives regioselectively.

A combination of photoelectron spectroscopy (PES) and synchrotron radiation in the valence region were employed to study the small penta-atomic molecules like FC(O)SCl and ClC(O)SCl. The results provided insight into electronic properties and the ionization channels of both species.

The infra red photodissociation spectroscopic studies of nonclassical [Au.sup.+] [(CO).sub.n] (n = 3-7) species in the gas-phase is demonstrated. The carbonyl stretch observed in blue-shift 50-100 [cm.sup.-1] with respect to the free CO vibration confirms the species as nonclassical metal carbonyls.

A new synthesis method is described for the aziridine required for the aziridine-[pi]-nucleophile cyclization for preparing 6-azabicyclo[3.2.1]octanes. The studies have shown that N-diphenylphospinyl and N-H aziridines have not led to the desired bicyclic ring systems, whereas a nosyl group on the aziridine nitrogen has led to the bicyclic ring system.

The structures of iron pentacarbonyl, Fe(CO)5, solvated in benzene and its fluorinated derivatives are investigated by X-ray absorption fine structure (XAFS) spectroscopy and infrared (IR) spectroscopy as well as density functional theory (DFT) calculations. It is shown that fluorinated benzenes interact in a similar geometry through either hydrogen or fluorine.

Thioacetalization is a reaction that protects carbonyl groups of aldehydes and ketones. A mechanism for this thioacetalization reaction is presented.

The high resolution multibubble sonoluminescence (MBSL) spectra arising from the ultrasonic irradiation of metal carbonyls and other volatile metal- containing compounds dissolved in silicone oil saturated with helium or argon are reported. These MBSL spectra showed that the pressure within the bubble at the point of emission was on the order of 300 bar in argon- saturated silicone oil, which is consistent with simple adiabatic compression during cavitation.