Search
Now showing items 21-30 of 41
Heteroleptic zinc dipyrromethene complexes
(2006-03)
H-1 NMR spectroscopy has been used to study the complexation of a per-alkyl dipyrromethene with
zinc acetate. An intermediate, assigned to be the heteroleptic Zn(dipyrromethene) (acetate) complex,
is observed under titration ...
Synthetic studies toward the kempane diterpenes. Construction of a key tricyclic intermediate
(2005)
A synthetic sequence is described for construction of the tricyclic portion (35) of kempane
diterpenes. The central stereochemistry was established by a Diels-Alder addition of
2,6-dimethyl-para-benzoquinone to a 5-membered, ...
Dynamics of anions and cations in cesium hydrogensulfide (CsHS, CsDS): Neutron and x-ray diffraction, calorimetry and proton NMR investigations
(2002-09)
Protonated and deuterated samples of the hydrogensulfide of cesium were studied by
high-resolution neutron powder diffraction, calorimetry and proton NMR investigations in a wide
temperature range. Primarily due to ...
Surface structural characteristics and tunable electronic properties of wet-chemically prepared Pd nanoparticles.
(2008)
No abstract available.
Investigation of factors affecting crystallization of cyclopentane clathrate hydrate
(2008-11)
We report the results of systematic investigations of the influence of thermal history and other
factors on crystallization of a model clathrate hydrate (cyclopentane hydrate) studied as
water-in-oil and oil-in-water ...
Low thermal conductivity of the negative thermal expansion material, HfMo2O8
(2007-04)
The thermal conductivity of the cubic polymorph of hafnium molybdate, HfMo2O8, was determined
over the temperature range of 2-400 K. The values of thermal conductivity were low (0.64 +/- 0.15 W
m(-1) K-1 at T=300 K for a ...
Electrochemical route for the fabrication of alkanethiolate-capped gold nanoparticles
(2003-03)
No abstract available.
Structure, thermal, and transport properties of the clathrates Sr8Zn8Ge38, Sr8Ga16Ge30, and Ba8Ga16Si30
(2004-07)
The structural parameters, thermal properties, and transport properties of three type I
clathrates, namely Sr8Zn8Ge38, Sr8Ga16Ge30, and Ba8Ga16Si30, have been determined at or below room
temperature. The structural ...
Thermal and lattice dynamical properties of Na8Si46 clathrate
(2001-07)
The experimental heat capacity of Na8Si46 has been determined from 35-300 K, and its lattice
parameters have been measured over the range 100-330 K. The experimental heat capacity and the
thermal-expansion coefficient ...
Phonon dispersion and Gruneisen parameters of zinc dicyanide and cadmium dicyanide from first principles: Origin of negative thermal expansion.
(2007)
Zinc dicyanide, Zn(CN)2, and the isostructural cadmium dicyanide show neg. thermal expansion
over a broad range of temps. By the use of d. functional theory calcns., we det. the phonon
dispersion curves of these materials ...