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نمایش تعداد 1-10 از 12608
Assessment of the engineering geological characteristics of the Bazoft dam site, SW Iran
The geotechnical parameters and permeability of the Bazoft dam site were investigated. The bedrock of the Bazoft dam site belongs to the Asmari and Jahrum (Eocene, Oligocene and Miocene) formations. Rock mass rating (RMR) ...
Synthesis, characterization and crystal structure of Indium(ш) binuclear complex containing pyridine-2,3 dicarboxylic acid
The novel centrosymmetric complex, [In2(pydc)2(pydcH)2(H2O)2] • 2H2O (1), (pydcH2 = 2,3-pyridinedicarboxylic acid) was
synthesized and thoroughly characterized using elemental analysis, IR, 1H NMR spectroscopy and single crystal X...
Potentiometric study of 2, 2´ bipyridine-citric acid proton-transfer system and itscomplexation with VO2+ ion in aqueous solution
The proton-transfer systems including pyridine bases and dicarboxylic acids
in aqueous solution and solid states were too considered in recent decade [1,
2], but the bipyridine as base in these systems has been less attention [3]. Also...
Studies on the macrocycle mediated transport in a bulk liquid membrane system of transition metal cations
COOH/CH3COONa) at pH = 5 and containing an equimolar mixture of Co2+, Fe3+, Cd2+, Cu2+, Zn2+, Ag+ and Pb 2+ metal cations. The organic phase contained the macrocyclic ligand, 1,10-dodecyl-1,10-diaza-18-crown-6 (Kryptofix 22DD) as an ionophore...
Two new coordination compounds of CoII built upon pyrazine-2,3-dicarboxylic acid:Syntheses, characterizations, and crystal structures
Two new coordination compounds of CoII based on pyrazin-2,3-dicarboxylic
acid formulated as (Base)2[CoII(pyzdc)2(H2O)2]·6H2O, (where Base = 2-amino-
4-methyl pyridinium (1); 2-amino-4-methyl pyrimidin-3-ium (2); and pyzdcH2
...
Study of Compelex Formation Between 4 -Nitrobenzo-15-Crown-5 and Mg2+, Ca2+, Sr2
of crown ether complexes are affected by the nature and composition of the solvent system [2,3].
The goal of this investigation is to study the effect of the nature and composition of the mixed solvents on selectivity and thermodynamic...