A PHOTOMETRIC-METHOD FOR THE DETERMINATION OF MOLYBDENUM WITH THIOCARBOHYDRAZIDE DERIVATIVES AND EVALUATION OF STEPWISE METAL-LIGAND STABILITY-CONSTANTS

被引：0
作者：
LAHIRI, S
GHOSH, M
机构：
来源：
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY | 1991年 / 30卷 / 11期
关键词：
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Molybdenum(VI) reacts with di-methylethylketone-thiocarbohydrazone (3,9-dimethylundeca-3,8-diene-4,5,7,8,tetraza-6-thione) and di-acetone-thiocarbohydrazone (2,8-dimethylnona-2,7-diene-3,4,6,7-tetraza-5-thione) to form reddish brown complexes in ethanol-water medium in the pH ranges 0. 5-1.8 and 1.2-2.8, respectively. Both the complexes show absorption maximum at 380 nm. The molar absorptivity and Beer's law range are 6.66 X 10(3) dm3 mol-1 cm-1, 1-15 ppm and 8.48 X 10(3) dm3 mol-1 cm-1, 0.5-14 ppm, respectively. The composition of the complexes (1:2, M:L) determined by Job's and mole-ratio methods has been verified on the basis of the values of nBAR. The stepwise stability constants of the complexes have been determined. Estimation of Mo(VI) in steel and the effects of foreign ions on its determination have been described. The relative standard deviations are +/- 0.1 8 and +/- 0.15 %, respectively.
引用
收藏
页码：989 / 991
页数：3
相关论文
共 50 条
[31]   COMPUTERIZED POTENTIOMETRIC DETERMINATION OF STABILITY-CONSTANTS OF METAL ION-CROWN COMPLEXES BY THE METHOD OF CORRESPONDING SOLUTIONS [J].
GRABARIC, BS ;
TKALCEC, M ;
MERZEL, V ;
FILIPOVIC, I .
ELECTROANALYSIS, 1991, 3 (07) :647-653
[32]   A SIMPLE AND ACCURATE METHOD FOR SPECTROMETRIC DETERMINATION OF STABILITY-CONSTANTS AND TRUE MOLAR ABSORPTIVITIES OF METAL-COMPLEXES [J].
FERRETTI, FH ;
OLSINA, R ;
MARONE, C .
ANALES DE LA ASOCIACION QUIMICA ARGENTINA, 1982, 70 (3-4) :501-508
[33]   Determination of stability constants of strong metal-ligand complexes using anion or cation exchange chromatography and atomic spectrometry detection [J].
Wacker, M. ;
Seubert, A. .
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 2014, 29 (04) :707-714
[34]   USE OF RESIN EXCHANGE METHOD FOR DETERMINATION OF STABILITY-CONSTANTS OF METAL-SOIL ORGANIC-MATTER COMPLEXES [J].
ZUNINO, H ;
AGUILERA, M ;
PEIRANO, P ;
GALINDO, G .
SOIL SCIENCE, 1972, 114 (03) :229-&
[35]   DETERMINATION OF STABILITY-CONSTANTS OF MIXED-LIGAND COMPLEXES BY KINETIC METHOD - MIXED-LIGAND COMPLEXES OF ETHYLENEDIAMINE AND CYANIDE ION WITH NI(II) [J].
KUMAR, K ;
NIGAM, PC .
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY, 1978, 16 (06) :518-519
[36]   EQUILIBRIUM DIALYSIS LIGAND-EXCHANGE - ADAPTATION OF THE METHOD FOR DETERMINATION OF CONDITIONAL STABILITY-CONSTANTS OF RADIONUCLIDE FULVIC-ACID COMPLEXES [J].
GLAUS, MA ;
HUMMEL, W ;
VANLOON, LR .
ANALYTICA CHIMICA ACTA, 1995, 303 (2-3) :321-331
[37]   PROTON-LIGAND AND METAL-LIGAND STABILITY-CONSTANTS OF N-ORTHO-CHLOROPHENYLBENZOPHYDROXAMIC ACIDS WITH MANGANESE(II), NICKEL(II), COPPER(II), ZINC(II), CADMIUM(II) AND MERCURY(II) [J].
AGRAWAL, YK ;
RATHI, BN .
TRANSITION METAL CHEMISTRY, 1986, 11 (12) :472-475
[38]   DETERMINATION OF STABILITY-CONSTANTS OF MIXED-LIGAND COMPLEXES BY KINETIC METHOD .2. MIXED-LIGAND COMPLEXES OF AMINOCARBOXYLATES AND CYANIDE ION WITH NICKEL(II) [J].
KUMAR, K ;
NIGAM, PC .
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY, 1979, 18 (03) :247-251
[39]   CORRELATION BETWEEN OVERALL STABILITY-CONSTANTS OF METAL-COMPLEXES .2. APPLICATION TO DATA OBTAINED BY POLAROGRAPHIC METHOD FOR METAL-INORGANIC LIGAND SYSTEMS [J].
MIHAILOV, MH ;
MIHAILOV.VT ;
KHALKIN, VA .
JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1974, 36 (01) :115-120
[40]   METAL-LIGAND STABILITY-CONSTANTS OF CHELATE COMPOUNDS OF 4-ISONITROSO-I-PHENYL-3-METHYL-PYRAZOLONE-5 WITH COPPER (II), NICKEL (II), COBALT (II) AND ZINC (II) [J].
DAS, SK ;
SHAH, JR ;
PATEL, RP .
JOURNAL OF THE INDIAN CHEMICAL SOCIETY, 1973, 50 (03) :228-229
12345