The thermal decomposition of metal complexes—X

Wendlandt, W.W.; Smith, J.P.

doi:10.1016/0022-1902(64)90009-0

Cited by 15 publications

(1 citation statement)

References 9 publications

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“…have been U(CA)2-6H20 (30), (NH,)r I, and N02 (340). Uranyl nitrate adducts of the type U02(N03)2 • N204, UO,(NO,)2 * 2MeC02Ef, and 1102-(N03)2 • 2MeCN also have been investigated (1), as has a series of phthalocyanintin complexes (168).…”

Section: Differential Thermal Analysismentioning

confidence: 99%

Thermal Analysis

Murphy¹

1966

Anal. Chem.

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This review covers the major trends in thermal analysis throughout the period covered from the previous review (218) to October 1965.Significant strides have been made in this field during the cited period, and more particularly in 1965. Symposia on thermal analysis were held in Toronto in February (189) and in London in April.The symposium on thermal analysis of synthetic fibers and fiberforming polymers was held in September

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Section: Differential Thermal Analysismentioning

confidence: 99%

Thermal Analysis

Murphy¹

1966

Anal. Chem.

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Simultaneous thermoanalytical investigations on the rapid decomposition of pentamminecobalt(III) complexes

Kristóf

Horváth

Szabó

1990

Journal of Thermal Analysis

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The thermal decomposition of [Co(NH3)sCO3]NO3, [Co(NH3)5NO2](NO3)2 and [Co(NH3)sH20](NO3)3 complexes was studied by simultaneous TG, DTG, DTA (Derivatograph-C), termogastitrimetry, continuous selective water detection, TG-MS, and XRD methods.Due to the nearly explosive reaction of these complexes the samples were heated in a labyrinth-type crucible after a 10-fold dilution with alumina.Through the quantitative determination of NH3 and H20 it was possible to reveal the subtleness of decomposition of these complexes.Based on the qualitative and quantitative results obtained by the different thermoanalytical techniques used the equations of decomposition are given for both stages of the reactions.Systematic studies on the thermal decomposition of crystalline pentamminecobalt(III) complexes dates back to a relatively early stage of development of thermoanalytical methods [1][2][3][4]. It was observed that the peak temperature of the exothermic redox reaction of [Co(NH3)5X] 2+ complexes (where X = r, Br-, CI-, F", and NO~-) could be correlated to the ligand field strength of the hetero ligand, X. The remarkable feature of these compounds is that they exhibit a similar trend in their redox reaction induced with electron transfer quenching of the photoexcited Ru(bpy)~ + complex (bpy = 2,2'-bipyridine) [5][6][7][8][9]. The new aspects of chemistry of these compounds directed our attention to the reinvestigation of their thermal reactions using highly sophisticated thermoanalytical techniques.

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Kinetics of dehydration in chelates of quinones involved in photosystem-II

Rane

Padhyé²,

Natu³

et al. 1989

Journal of Thermal Analysis

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The solid-state deaquation of the trans-and cis-oximates of lawsone (I) and phthiocot (II) with cobalt(II) was investigated by means of non-isothermal thermogravimetry. The modes of deaquation during the thermolyses of hydrated oximates of (I) and (II) with compositions CoL2.2H20 were compared. The weight loss vs. temperature data were treated by using the Coats and Redfern relations. The kinetic data support a rearrangement-type mechanism for the deaquation of the oximate of phthiocol. The Eo values for both the ligands and water molecules were found to be ~23 kJ/mol.

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The thermal decomposition of metal complexes—X

Cited by 15 publications

References 9 publications

Thermal Analysis

Thermal Analysis

Simultaneous thermoanalytical investigations on the rapid decomposition of pentamminecobalt(III) complexes

Kinetics of dehydration in chelates of quinones involved in photosystem-II

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