Now showing items 421-430 of 479
C=O stretch mode splitting in the formic acid dimer: Electrostatic models of the intermonomer interaction
(Elsevier, 1987-06)
The physical origin of the large (74 cm-1) splitting between the symmetric (Ag) and antisymmetric (Bu) components of the C=O stretch mode in the formic acid dimer has previously been attributed to tautomerism effects, ...
On the dehydration of trans-1,2-dihydrophthalic acid
(Elsevier, 1980)
The epimerization/dehydration of the title compound occurs by way of an enolization rather than a pair of concerted, suprafacial [1,5] hydrogen shifts.
Quasi-elastic light-scattering investigation of microemulsions
(Elsevier, 1980-09)
Quasi-elastic light scattering was used to investigate W/O microemulsions of heptane-AOT-(bis(2-ethylhexyl)sulfosuccinate sodium salt)-water and W/O and O/W microemulsions of hexadecane-SDBS (sodium dodecyl benzene ...
Carbon-13 and silicon-29 NMR spectra of some [tris(trimethylsilyl)methyl]-substituted silanes and related compounds
(Elsevier, 1982-08-24)
Fourier Transform 13C and 29Si NMR spectra are reported for series of [tris-(trimethylsilyl)methyl] dimethylsilanes, [tris(trimethylsilyl)methyl] diphenylsilanes, and for related compounds. Analysis of chemical shift values ...
The thermodynamic properties of cesium metaborate CsBO2 from 5 to 1000 K
(Elsevier, 1988-06-15)
The low-temperature heat capacities of cesium metaborate were measured by adiabatic calorimetry from 9 to 346 K. High-temperature enthalpy increments of CsBO2 were measured by drop calorimetry from 414 to 671 K. In addition, ...
Stereoselective acyclic synthesis via allylmetals: Threo vicinal diols from both - and -[gamma]-alkoxyallyltins and aldehydes
(Elsevier, 1987)
Both - and -[gamma]-alkoxyallyltins stereoselectively add to aldehydes in the presence of BF3[middle dot]OEt2 at -78[deg]C in CH2Cl2 to produce the threo (or syn) vicinal diol monoalkyl ether unit.
Reversible microsomal binding of hepatic aldolase
(Elsevier, 1981-10-13)
Fructose-1,6-bisphosphate aldolase (-fructose-1,6-bisphosphate -glyceraldehyde-3-phosphate lyase, EC 4.1.2.13) partitions between the microsomes and the cytosol when a rat liver homogenate is fractionated by differential ...
Assignment of the chemical shift values of N-trityl -homoserine lactone
(Elsevier, 1988)
This paper reports the correct assignment of all chemical shift values of N-trityl -homoserine lactone based on the 1H-nmr spectra of N-trityl-2S, 3R-[3-2H]- and 2S, 3S-[2,3-2H2]homoserine lactone.
Micellization and intermicellar interactions in aqueous sodium dodecyl benzene sulfonate solutions
(Elsevier, 1982-12)
Quasielastic light scattering was used to investigate the size and shape of sodium dodecyl benzene sulfonate (SDBS) micelles in aqueous solutions. Measurements were made as a function of temperature and NaCl and SDBS ...
Electrochemical reduction of 4-aminopyrimidine and cytosine in dimethyl sulfoxide
(Elsevier, 1982-12-23)
The electrochemical reduction in dimethyl sulfoxide of cytosine (4-amino-2-hydroxypyrimidine) and one of its model compounds (4-aminopyrimidine) has been examined. Initially, each pyrimidine (RH) undergoes a reversible, ...