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Synthesis and thermal behaviour of morpholine complexes with cobalt (II) and manganese (II) thiocyanates

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Abstract

The 1 ∶ 4 complexes of cobalt (II) and manganese (II) thiocyanates with morpholine (Morph), [M(NCS)2(Morph)4] (M=Co, Mn), were prepared and studied by means of thermogravimetry, derivative thermogravimetry and differential scanning calorimetry. By thermal treatment of the above compounds, the 1∶2 and 1∶1 complexes, [M(NCS)2(Morph)2] (M=Co, Mn; n=1, 2), were formed. Magnetic data, infrared and electronic spectra and molar conductance values for the compounds are reported. All the complexes contain N-bonded morpholine and the 1∶4 complexes are suggested to have a monomericcis pseudooctahedral structure with N-bonded thiocyanate, whereas the 1∶2 and 1∶1 complexes are considered to have a six-coordinated polymeric configuration involving bridging NCS groups.

Zusammenfassung

Mittels. Thermogravimetrie, Derivativthermogravimetrie und Differential-Scanning-Kalorimetrie wurden die zuvor dargestellten 1∶4 Komplexe von Kobalt(II)- und Mangan(II)thiozyanaten mit Morpholin (morph) [M(NCS)2(morph)4] mit M=Co, Mn untersucht. Durch Erhitzen obiger Verbindungen entstehen die 1∶2- bzw. 1∶1-Komplexe [M(NCS)2(morph)n] mit M=Co, Mn undn=1, 2. Magnetisierungsdaten, Infrarot- und Elektronenspektren sowie die molare Leitfähigkeit der Verbindungen wurden ermittelt bzw. angegeben. Alle Komplexe enthalten N-gebundenes Morpholin. Die 1∶4 Komplexe besitzen eine monomere cis-pseudooktaedrische Struktur mit N-gebundenem Thiozyanat, während die 1∶2- und 1∶1-Komplexe eine hexakoordinierte polymere Struktur mit NCS-Gruppenbrücken zu besitzen scheinen.

Резюме

Методом ТГ, ДТГ и ДСК из учены синтезированн ые комплексы тиоцианат ов кобальта и марганца с морфолином (морф.) обще й формулы [М(МСS)2(морф.)4]. При термической обработ ке этих комплексов об разуются соединения состава [М (МСS)2(морф.) n ], гдеп=1 или 2. Для этих соедин ений приведены магни тные данные, ИК спектроско пические данные, электронные спектры поглощения и значени я молярной проводимости. Коорди национная связь в комплексах осущест вляется через азот мо рфолина. Комплексы состава 1∶4 (м еталл: лиганд) являются мономерным и с цис-псевдооктаэдр ической структурой и содержа щие N-связанные тиоцианатные группы. Комплексы состава 1∶21 и 1∶1 имеют шести-координационн ую полимерную конфигурацию, включа ющую мостиковые тиоцианатные группы.

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Authors and Affiliations

  1. Department of Inorganic Chemistry, University of Murcia, Murcia, Spain

    L. García, J. Palazón, J. Gálvez & G. López

Authors
  1. L. García
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  2. J. Palazón
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  3. J. Gálvez
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  4. G. López
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Additional information

The authors express their thanks to Dirección Regional de Universidad e Investigación de la Comunidad Autónoma de Murcia for providing financial assistance.

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García, L., Palazón, J., Gálvez, J. et al. Synthesis and thermal behaviour of morpholine complexes with cobalt (II) and manganese (II) thiocyanates. Journal of Thermal Analysis 35, 113–120 (1989). https://doi.org/10.1007/BF01914270

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  • DOI: https://doi.org/10.1007/BF01914270

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