scholarly journals Temperature Variation of the Principal Magnetic Moments of Co++ Ions and the Asymmetry of the Crystalline Electric Field in Cobalt Acetate Tetrahydrate

Nature ◽  
1959 ◽  
Vol 184 (4679) ◽  
pp. 50-50 ◽  
Author(s):  
BHAGAWATI CHARAN GUHA
Keyword(s):  
Electric Field ◽  
Temperature Variation ◽  
Magnetic Moments ◽  
Cobalt Acetate ◽  
Acetate Tetrahydrate ◽  
Crystalline Electric Field ◽  
The Asymmetry ◽  
Cobalt Acetate Tetrahydrate

Electronic and Magnetic Properties of Ternary Stannides RERhSn (RE = Tb, Dy and Ho)

2011 ◽  
Vol 170 ◽  
pp. 74-77 ◽  
Author(s):  
Kazimierz Łątka ◽  
Jacek Gurgul ◽  
Andrzej W. Pacyna ◽  
Rainer Pöttgen
Keyword(s):  
Magnetic Properties ◽  
Electric Field ◽  
Magnetic Moment ◽  
Magnetic Moments ◽  
Magnetic Studies ◽  
Crystalline Electric Field ◽  
Electric Field Effects ◽  
Electronic And Magnetic Properties ◽  
Field Effects

The results of magnetic studies and Mössbauer investigations made with 119Sn source are reviewed for the series of RERhSn (RE = Tb, Dy and Ho) compounds crystallizing in the same hexagonal ZrNiAl-type of structure. The role of crystalline electric field effects in the establishing of magnetic moment orientations observed in these compounds and their influence on the observed magnitudes of magnetic moments are discussed.

scholarly journals Metal-mediated reactions towards the synthesis of a novel deaminolysed bisurea, dicarbamolyamine

2018 ◽  
Vol 16 (1) ◽  
pp. 535-543 ◽  
Author(s):  
Felix Odame ◽  
Eric Hosten ◽  
Zenixole R. Tshentu
Keyword(s):  
Single Crystal ◽  
Cobalt Acetate ◽  
Nitrate Hexahydrate ◽  
The Novel ◽  
Acetate Tetrahydrate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Benzoyl Isothiocyanate ◽  
Cerium Nitrate Hexahydrate ◽  
Cobalt Acetate Tetrahydrate

AbstractA new selective cobalt acetate tetrahydrate or cerium nitrate hexahydrate mediated cleavage of the C–N bond of a benzoyl isothiocyanate derivative to give (carbamoylamino)methanethioamide is presented. The cleavage of the C–N could not be achieved in the absence of thione. The novel silver-mediated conversion of a thione to the carbonyl was achieved on 1-((benzamido)formyl)urea and replicated on (carbamoylamino)methanethioamide to give the deaminolyzed bisurea (dicarbamolyamine). The compounds were characterized by IR, NMR, microanalysis and GC–MS. The single crystal X–ray diffraction studies of the crystal structures of compounds I, II, III and V is discussed.

Mechanism of thermal decomposition of cobalt acetate tetrahydrate

2007 ◽  
Vol 61 (4) ◽  
Author(s):  
T. Wanjun ◽  
C. Donghua
Keyword(s):  
Thermal Decomposition ◽  
Cobalt Acetate ◽  
Thermal Decomposition Mechanism ◽  
Acetate Tetrahydrate ◽  
Major Step ◽  
In Situ Xrd ◽  
Crystalline Water ◽  
Evolved Gases Analysis ◽  
Cobalt Acetate Tetrahydrate

AbstractThe thermal decomposition of cobalt acetate tetrahydrate (Co(CH3COO)2 · 4H2O) has been studied via thermogravimetric (TG) analysis, in situ X-ray powder diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The results of TG and XRD showed that the parent salt melted and then the dissolved crystalline water was vaporized in two steps. The dehydration process was followed by a major step concerning the decomposition of the acetate group, leading to basic acetate as an intermediate, which then produced CoO and Co in N2 and H2 atmosphere, respectively. Three decomposition intermediates Co(CH3COO)2 · 0.5H2O, Co(CH3COO)2, and Co(OH)(CH3COO) were presumed. In situ XRD experiments revealed that the intermediate basic acetate was poorly crystallized or even amorphous. Evolved gases analysis indicated that the volatile products of acetate decomposition were water vapor, acetic acid, ethylenone, acetone, and CO2. A detailed thermal decomposition mechanism of Co(CH3COO)2 · 4H2O was discussed.

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