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Coordination compounds of Co(II), Ni(II) and Cu(II) with capric acid hydrazide

Caprinsäurehydrazid-Komplexe von Co(II), Ni(II) und Cu(II)

  • Anorganische Und Physikalische Chemie
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Abstract

The reaction of aquo-ethanolic solutions of Co(II), Ni(II) and Cu(II) salts and ethanolic solution of capric acid hydrazide (L) yielded paramagnetic, high-spin bis- and tris(ligand) chelate complexes. The tris(ligand) complexes, [ML 3]X 2·nH2O [M=Co(II), Ni(II);X=NO 3 , ClO 4 , 1/2SO 2−4 ], have an octahedral structure formed on account of the bidentate (NO) coordination of three neutral hydrazide molecules. In the bis(ligand) complexes,ML 2(NCS)2 [M=Co(II), Ni(II)] and CuL 2 X 2·nH2O (X=NO 3 , ClO 4 and 1/2SO 2−4 ), the oxoanions and NCS take also part in coordination. The complexes have been characterized by elemental analysis, IR spectra, magnetic measurements, molar conductivity and TG analysis.

Zusammenfassung

Durch die Reaktion von wäßrig-ethanolischen Lösungen von Co(II)-, Ni(II)-und Cu(II)-Salzen mit einer ethanolischen Lösung von Caprinsäurehydrazid (L) wurden paramagnetische high-spin Bis- und Tris-Ligand-Chelatkomplexe erhalten. Tris-Ligand-Komplexe des Typs [ML 3 X 2·nH2O [M=Co(II), Ni(II);X=NO 3 , ClO 4 , 1/2SO 2−4 ], die eine oktaedrische Struktur besitzen, entstehen durch die Koordination von drei neutralen zweizähnigen (NO)-Hydrazidmolekülen. Bei den Bis-Ligand-KomplexenML 2(NCS)2 [M=Co(II), Ni(II)], sowie bei den Bis-Ligand-Komplexen CuL 2 X 2·nH2O (X=NO 3 , ClO 4 , 1/2SO 2−4 ) nehmen bei der Koordination außer Hydrazid auch die Säurereste teil. Die Komplexe wurden durch Elementaranalyse, IR-Spektren, magnetische Messungen, molare Leitfähigkeit und TG-Analysen charakterisiert.

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Chundak, S.J., Leovac, V.M. & Bjelica, L.J. Coordination compounds of Co(II), Ni(II) and Cu(II) with capric acid hydrazide. Monatsh Chem 118, 923–930 (1987). https://doi.org/10.1007/BF00815319

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  • DOI: https://doi.org/10.1007/BF00815319

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