Now showing items 21-30 of 204
Thermodynamics of alkali alkanoates VII. Heat capacity and thermodynamic functions of potassium acetate from 4 to 585 K
(Elsevier, 1990-01)
The heat capacity of potassium acetate was measured by equilibrium adiabatic calorimetry from near 4 K up to 350 K and by d.s.c. from 325 K through melting (solid to isotropic liquid) to 585 K. No transition or anomaly was ...
MOCVD of rhodium, palladium and platinum complexes on fluidized divided substrates: Novel process for one-step preparation of noble-metal catalysts
(John Wiley & Sons, Ltd., 1998-03)
A new one-step method, entitled fluidized-bed metal-organic chemical vapor deposition (FBMOCVD) of preparing highly dispersed metal-supported catalysts is reported. The following complexes were studied and used as CVD ...
Iodine-promoted decomposition of 1-aryl-3,3-dialkyltriazenes: A mild method for the synthesis of aryl iodides
(Elsevier, 1994-08-01)
Iodine promoted decomposition of 1-aryl-3,3-dialkyltriazenes in organic solvents is shown to give high yields of the corresponding aryl iodides under extremely mild conditions. The presence of iodine greatly accelerates ...
Design of molecular architectures for polymeric mesophase formation
(Wiley Periodicals, Inc.Hüthig & Wepf Verlag, 1995-07)
Based on the tendency of low molar mass liquid crystals composed of extended mesogens symmetrically disubstituted with long n ‐alkoxy substituents to exhibit smectic C mesophases, we have proposed that SCLCPs with laterally ...
Synthesis and assignments of regioisomeric cyanoimidazole esters
(Elsevier, 1994-02-28)
Regioassignments of ethyl cyanoimidazolecarboxylates have been performed by the nuclear Overhauser effect(NOE) studies on the regioisomeric monocyanoimidazoles obtained by the hydrolysis of the esters followed by ...
Synthesis of (+/-)tylophorine by the intramolecular cycloaddition of an azide with an [omega]-chloroalkene
(Elsevier, 1994)
Cyclization of (Z)-1-(2-chloromethyl)phenyl-5-azidopent-1-ene 10 in benzene at 120[deg]C followed by treatment with sodium borohydride produced 1,2,3,5,10,10a-hexahydropyrrolo[1,2-b]isoquinoline 11 in 71% yield. A similar ...
Thermodynamics of alkali alkanoates X. Heat capacities and thermodynamic properties of lithium methanoate and lithium ethanoate at temperatures from [approximate] 5 K to 580 K
(Elsevier, 1994-12)
Heat capacities of lithium methanoate and ethanoate (CA Registry numbers [556-63-8] and [546-89-4]) have been measured by adiabatic intermittent-heating equilibrium calorimetry from temperatures T near 5 K to 350 K and by ...
Hydrazine adsorption and decomposition on the GaAs(100)-c(8 x 2) surface
(Elsevier, 1994-12-20)
Temperature programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS), and high resolution electron energy loss spectroscopy (HREELS) have been used to study the decomposition mechanism of hydrazine (N2H4) on the ...
Non-biomimetic route to deoxyadenosine adducts of carcinogenic polycyclic aromatic hydrocarbons
(Elsevier, 1991-10-21)
Aminotriols are prepared by direct aminolysis of the diol epoxides of polycyclic aromatic hydrocarbons, providing a substantial improvement over literature methods. The condensation of aminotriols with 6-halopurine ...
An evaluation of the rotational barrier about the B---N bond of 1-aminoborepins
(Elsevier, 1994-04-05)
13C NMR spectroscopy has been used to determined the barriers to rotation about the B---N bonds of 1-(N-benzyl-N-methylamino)borepin and 1-(N-benzyl-N-methylamino)-4,5-dihydroborepin as 18 and 19.8 kcal mol-1, respectively. ...