Synthesis, characterization and chromotropic properties of MnII, CoII, NiII and CuII with bis (acesulfamato) bis ( 3 -methylpyridine) complexes |
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Authors: | Hasan Icbudak Elif Adiyaman Ahmet Uyanik and Semiha Cakir |
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Institution: | (1) Department of Chemistry, Faculty of Arts and Sciences, Ondokuz Mayis University, 55139 Kurupelit- Samsun, Turkey;(2) Department of Chemistry, Faculty of Arts and Sciences, Gazi University, 06500 Teknikokullar-Ankara, Turkey |
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Abstract: | The novel
3-
M: MnII, CoII, and NiII] and
3-
complexes (acs: acesulfamate; 3-pic: 3-methylpyridine) have been synthesized and characterized using elemental analyses,
magnetic moments, UV–Vis and FT-IR spectra. The thermal behaviour of the complexes was also studied by simultaneous TG, DTG
and DTA methods in static air atmosphere. The chromotropic properties of all complexes have been studied using thermal and
spectral analysis. While the complexes of CoII and NiII show reversible continuous thermochromism, an irreversible discontinuous thermochromism is observed in the MnII and CuII) complexes in the solid state. The observed thermochromism in the MnII, CoII and NiII complexes is due to the different ligand field strength associated with the deaquation reaction. The solvatochromic behaviour
of the complexes is also studied and all
anhydrous complexes (except MnII) exhibit solvatochromic properties depending on the donor number of the solvent. |
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Keywords: | |
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