The molecular weight of polyolefins produced using iron or cobalt complexes of 2,6-pyridinecarboxaldehyde diimines or a 2,6-diacylpyridine diimines as polymerization catalysts may be lowered by carrying out the polymerization in the presence of hydrogen.ARTHUR Samuel David...
摘要: The molecular weight of polyolefins produced using iron or cobalt complexes of 2,6-pyridinecarboxaldehyde diimines or a 2,6-diacylpyridine diimines as polymerization catalysts may be lowered by carrying out the polymerization in the presence of hydrogen....
Three high-molecular-weight pyridine amines, 5-(4-pyridyl)nonane, 2-hexylpyridine, and diphenyl-2-pyridylmethane, have been studied as components of solvent extraction systems. Results are presented to show the dependence of the uranium extraction coefficient (Dao = [Uorg]/[Uaq]) on equilibrium...
Molecular weights and molecular weight distribution of the products of spontaneous polymerization of quaternary salts of 4-vinyl-pyridine and ethyl bromide in benzene as medium 喜欢 0 阅读量: 13 作者:MI Mustafayev,KV Aliev,VA Kabanov 摘要: The thermodynamics, kinetics and the mechanisms of reactions...
1. The polymer sample is treated with acetic anhydride and pyridine to generate the reaction product. 2. The amount of ester generated is measured using titration and the amount of hydroxyl is calculated from the titration results at the end of the reaction. ...
g. Pyridine hemochrome assay of the supercomplex, reduced minus oxidized spectrum is shown. The peaks of the corresponding hemes are indicated in the figure. The estimated ratio of heme a, b and c is 1.1:0.9:1.3. Supplementary Figure 2 Composition of the M. smegmatis supercomplex. In ...
Synthesis, structure and reactivity of six-membered cycloaurated complexes of 2-anilino-, 2-phenoxy- a... At room temperature and in ethanol 2-anilinopyridine reacted with H[AuCl4]·4H2O as well as Na[AuCl4]·2H2O to give directly the six-membered cycloaurated ... Y Fuchita,H Ieda...
Equilibrium bindings of two low-molecular-weight hydrogen bond acceptor ligands, tetrahydrofuran (THF) and pyridine (PH), and their fully deuterated analogues (TDF, PD) with poly(4-vinylphenol) (PVF) and its low-molecular-weight model, a hydrogen bond donor 4-isopropylphenol (IPP), were studie...
The pyridine extracts from Bruceton and Illinois No. 6 coals were fractionated using gel permeation chromatography and the molecular weight of each fraction was measured using vapor pressure osmometry. If, as has been suggested, coalification is a simple condensation polymerization from a mixture of ...
The crystal and molecular structures of (1,1,1,5,5,5-hexafluoropentane-2,4-dionato)pyridine(2,3,5,6-畏 4-2,3-dicarbomethoxybicyclo[2.2.1]heptadiene)rhodium... HUGHES, R. P,KRISHNAMACHARI, N,LOCK, C. J. L,... - 《Chemischer Informationsdienst》 被引量: 18发表: 1977年 Theoretica...