LOW-TEMPERATURE MAGNETIZATION AND SPECTRAL STUDIES OF COBALT COMPLEXES OF ALPHA-FURILGLYOXIME

被引：1

作者：

HUSSAIN, MS ^{[1
]}

KHATTAK, GD ^{[1
]}

机构：

[1] KING FAHD PETR & MINERALS,DEPT PHYS,DHAHRAN 31261,SAUDI ARABIA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1994年 / 134卷 / 01期

关键词：

D O I：

10.1016/0304-8853(94)90085-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetization and spectroscopic studies were carried out on [Co(Hafdo)2X2] complexes with X being the monodentate O, S, P, As and Se donor ligands attached to the axial positions. Cobalt(II) undergoes air oxidation to cobalt(III), when a strong-field ligand is attached to the axial positions but when water is the axial ligand, the oxidation of cobalt(II) was not observed. The [Co(Hafdo)2X2] moiety exhibits intramolecular short hydrogen bond with the glyoximes occupying the equatorial plane and the monodentate ligands attached to the axial positions. The mole fraction of cobalt(II) in the paramagnetic [Co(Hafdo)2(H2O)2] complex, calculated from the magnetization data, is from 0.14-0.18 for the temperature range of 4.2 to 30 K.

引用

页码：137 / 142

页数：6

共 16 条

[1]

ANGELICI RJ, 1977, SYNTHESIS TECHNIQUES, P92

[2] CHARACTERIZATION OF THE STRUCTURE, PROPERTIES, AND REACTIVITY OF A COBALT(II) MACROCYCLIC COMPLEX [J].

BAKAC, A ;

BRYNILDSON, ME ;

ESPENSON, JH .

INORGANIC CHEMISTRY, 1986, 25 (23) :4108-4114

[3]

BIGOTTO A, 1970, SPECT CHIM ACTA, V27, P1659

[4] TRANSITION-METAL COMPLEXES OF THIOSEMICARBAZIDE AND THIOSEMICARBAZONES [J].

CAMPBELL, MJM .

COORDINATION CHEMISTRY REVIEWS, 1975, 15 (2-3) :279-319

[5]

Dolphin D., 1982, B12, VI

[6] MACROCYCLIZATION OF TRANSITION-METAL COMPLEXES OF ALPHA-FURILGLYOXIME AND BENZILGLYOXIME [J].

ELFAER, MZ ;

KHAN, A ;

HUSSAIN, MS .

JOURNAL OF COORDINATION CHEMISTRY, 1987, 16 (01) :81-87

[7]

EMSELY E, 1980, CHEM SOC REV, V9, P91

[8]

Haque M., 1994, T MET CHEM, V19, P95

[9]

Hughes M. N., 1981, INORGANIC CHEM BIOL

[10] THE CRYSTAL-STRUCTURE AND LOW-TEMPERATURE MAGNETIC-SUSCEPTIBILITY OF SQUARE-PLANAR "BIS(1,5-DIAZACYCLOOCTANE)NICKEL(II) PERCHLORATE DIHYDRATE [J].

HUSSAIN, MS ;

AHMAD, J ;

MAZHARULHAQUE ;

KHATTAK, GD .

TRANSITION METAL CHEMISTRY, 1986, 11 (04) :155-159

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