Now showing items 21-30 of 187
Thermophysics of the lanthanide hydroxides I. Heat capacities of La(OH)3, Gd(OH)3, and Eu(OH)3 from near 5 to 350 K. Lattice and Schottky contributions
(Elsevier, 1980-01)
From values of the heat capacity of microcrystalline La(OH)3, Gd(OH)3, and Eu(OH)3 determined by precise adiabatic calorimetry from near 10 to 350 K, the Schottky contribution associated with the low-lying J-manifolds of ...
A total synthesis of the naturally occurring pyrrolo[2,3-]pyrimidine nucleoside, mycalisine A
(Elsevier, 1988)
The first total synthesis of mycalisine A, a pyrrolo[2,3-]pyrimidine nucleoside, was accomplished by a multi-step synthesis from toyocamycin.
Excited state spectroscopy of para di-substituted benzenes in a supersonic beam using resonant two photon ionization
(Elsevier, 1986)
Excited state vibronic spectra of p-aminophenol, p-cresol, p-fluoroaniline, p-fluorophenol, hydroquinone and p-toluidine have been obtained using resonant two photon ionization supersonic beam mass spectrometry. Despite ...
Intramolecular azide-diene cycloadditions. An approach to fused bicyclic 3-pyrrolines based on a one-pot nitrene-diene cycloaddition equivalent.
(Elsevier, 1986)
Cyclization of heterosubstituted [omega]-azidodienes 11 provides fused bicyclic 3-pyrrolines 12 in one operation. These pyrrolines are potentially useful intermediates for natural products synthesis, as illustrated by ...
Excitation temperature, degree of ionization of added iron species, and electron density in an exploding thin film plasma
(Elsevier, 1981)
Time and spacially resolved spectra of a cylindrically symmetric exploding thin film plasma were obtained with a rotating mirror camera and astigmatic imaging. These spectra were decouvolved to obtain relative spectral ...
Observation of coupled quasi-two-dimensional electronic excitations in tilted magnetic fields
(Elsevier, 1988)
We report on a magneto-Raman scattering investigation of free and donor-bound electrons in GaAs/AlxGa1-xAs quantum wells. For fields perpendicular to the layers, the spectra show intersubband transitions of photoexcited ...
The reaction of the highly functionalized copper reagents RCu(CN)ZnI.BF3 with aldehydes
(Elsevier, 1988)
The new copper reagent RCu(CN)ZnI 2, which may contain important functional groups like the ester, nitrile, enoate or imide group, react in the presence of BF3.OEt2 with aldehydes to afford polyfunctional secondary alcohols ...
The thermodynamics of ammonium indates I. The heat capacity of the ammonium pentachloroindate monohydrate salt (NH4)2InCl5 [middle dot] H2O from 8.5 to 349 K
(Elsevier, 1988-07)
The heat capacity of ammonium pentachloroindate monohydrate (NH4)2InCl5 [middle dot] H2O was measured from 8.5 to 349 K using adiabatic calorimetry. The curve of molar heat capacity against temperature is continuous, but ...
Synthesis and reactivity of open-chain and cyclic 2-cyano zinc and copper organometallics
(Elsevier, 1989)
Various open-chain and cyclic [beta]-cyano zinc and copper organometallics can be prepared by the reaction of the corresponding organic halides with zinc and subsequent transmetalation with CuCN [middle dot] 2 LiCl. They ...
The thermodynamics of ammonium scheelites IV. Heat capacity of ammonium metaperiodate NH4IO4 from 8 to 324 K
(Elsevier, 1987-07)
The heat capacity of the scheelite salt ammonium metaperiodate, NH4IO4, was measured from 8 to 324 K using adiabatic calorimetry. The heat capacity against temperature curve shows an excess with a maximum around 200 K as ...