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Thermal behaviour of some nickel(II)-morpholine complexes

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Abstract

The preparation of Ni(CN)21.5M (M=morpholine) and the thermal study of this and NiBr23M, Nil24M and Ni(NCS)24M are described. The thermal treatment of these compounds leads to the isolation of Ni(CN)2M, Ni(CN)20.5M, NiBr22M, Nil23M, Nil21.5M, Ni(NCS)22M and Ni(NCS)2M. With the exception of NiBr22M and Ni(NCS)22M, all intermediate species are reported here for the first time. Magnetic and spectral studies have been carried out to determine the mode of coordination and stereochemistry of the complexes. The thermal study includes the determination of stability, apparent activation energy and reaction orders, and reaction enthalpies.

Zusammenfassung

Die Darstellung von Ni(CN)21.5M (M=Morpholin) wird beschrieben. Das thermische Verhalten dieser Verbindung und von NiBr23M, Nil24M und Ni(NCS)24M wird untersucht. Durch thermische Behandlung dieser Verbindungen werden Ni(CN)2M, Ni(CN)20.5M, NiBr22M, Nil23M, Nil21.5M, Ni(NCS)22M und Ni(NCS)2M erhalten. Mit Ausnahme von NiBr22M und Ni(NCS)22M handelt es sich dabei um bisher noch nicht beschriebene Zwischenprodukte. Es wurden magnetische und spektrometrische Untersuchungen ausgeführt, um die Art der Koordinaten und die Stereochemie dieser Komplexe zu ermitteln. Die thermische Untersuchung erstreckt sich auf die Bestimmung der Stabilität, der scheinbaren Aktivierungsenergie und der Reaktionsordnungen sowie der Reaktionsenthalpien.

Резюме

Описано получение ко мплекса Ni(CN)21.5M (M=морфолин), термическое исследо вание которого проведено с овместно с комплекса ми NiBr23M, Nil24M, Ni(NCS)24M. Термическая обработ ка этих комплексов пр иводит к образованию Ni(CN)2M, Ni(CN)20.5M, NiBr22M, Nil23M, Nil21.5M, Ni(NCS)22M, и Ni(NCS)2M. За искл ючением NiBr22M и Ni(NCS)22M, все остальные пр омежуточные соедине ния обнаружены впервые. С целью определения т ипа координации и сте реохимии комплексов, было пров едено исследование их магн итных и спектральных свойств. Термическое исследо вание включало определение их устой чивости, кажущейся эн ергии активации и порядков реакций, а также энтальпий реакций.

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Gálvez, J., Palazón, J., López, G. et al. Thermal behaviour of some nickel(II)-morpholine complexes. Journal of Thermal Analysis 29, 465–478 (1984). https://doi.org/10.1007/BF01913456

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