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Une analyse vibrationnelle par spectrométrie infrarouge et Raman dans la zone 0–4000 cm −1 précise les conformations des acides oléique γ et élaïdique solides (acides Z et E-9 octadécénoïques), à 90 K et pour comparaison à 300 K dans le cas de l'acide élaïdique. L'interprétation...
The Hummel-Dreyer gel permeation technique has been applied to investigate the binding of bovine serum albumin (BSA) with Zn 2+ and Cd 2+ , and has provided evidence for the existence of two different types of binding sites in the BSA molecule. The effects of pH and the presence of metal ions Zn...
Raman spectra of the hydrogen-deuterium exchange reaction occurring in the HCOO − -D 2 O system at elevated temperatures and pressures are reported. The rate constants at four temperatures have been measured and from these an activation energy of around 170 kJ mol −1 has been calculated....
The effects of solvents and pH on absorption and fluorescence spectra of 4,4′-diaminodiphenyl methane (DADPM) have been investigated. The solvatochromic shifts reveal that in the ground state the CH 2 group isolates two phenyl rings whereas in the excited singlet state (S 1 ) there is a...
The FT-Raman and selected IR spectra of 14 heterobimetallic complexes of (CO) 3 CrC 6 H 5 -C 5 H 4 M(CO) n (NO) m X (M = transition metal, X = other ligands) are reported. FT-Raman exhibits distinct strong characteristic bands of coordinated C 6 H 5 -C 5 H 4 ligand ring deformation near 1540,...
The hydrogen bonding interactions between thioacetamide (TA) and several N , N -disubstituted benzamides ( N , N -dimethylbenzamide (DMBA), N -methoxy- N -methylbenzamide (MMBA), N , N -diethyl- m -toluamide (DEMT), and N , N -diethyl-2,5-difluorobenzamide (DEDF)) have been studied using...
On subjecting either CS 2 or sulphur vapour in flowing neon to microwave discharge and collecting the products, we formed dilute deposits of S 2 + in solid Ne near 5 K. The photoluminescence of S 2 + in the system A 2 Π u → X 2 Π g was measured in the wavelength range 450–800 nm, and...
In previous spectroscopic work on dimethylhexanes, complete vibrational assignments of each isomer in its most stable conformation were made with the aid of normal-coordinate analyses. In this communication, the vibrational spectra of 2,2- and 2,5-dimethylhexane are re-examined, and a number of...
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