Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole

2007
Authors
Leovac, Vukadin M.Tomić, Zoran D.

Szecsenyi, Katalin Meszaros

Jovanović, Ljiljana S.
Joksović, Milan D.

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The crystal and molecular structures of four tetrahedral structurally similar [Co(aamp)(2)X-2] complexes (aamp = 4-acetyl-3-amino-5-methylpyrazole, X = Cl, Br, I and NCS) were determined by X-ray diffraction analysis and are discussed in detail. It was found that the different capacity of the ligand X (NCS vs. Cl, Br, I) for the formation of non-bonding contacts influence the mode of molecular association in the solid state. The complexes were characterized by UV-Vis spectroscopy. The first step of the thermal decomposition of the compounds was checked and is discussed in the view of the IR spectrum of the intermediate isolated from [Co(aamp)(2)Br-2] by the quasi-isothermal technique.
Keywords:
cobalt(II) complexes / 4-acetyl-3-amino-5-methylpyrazole / crystal structure / electronic spectra / quasi-isothermal TASource:
Journal of the Serbian Chemical Society, 2007, 72, 12, 1281-1293Funding / projects:
DOI: 10.2298/JSC0712281L
ISSN: 0352-5139
WoS: 000252412100013
Scopus: 2-s2.0-36949033406
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VinčaTY - JOUR AU - Leovac, Vukadin M. AU - Tomić, Zoran D. AU - Szecsenyi, Katalin Meszaros AU - Jovanović, Ljiljana S. AU - Joksović, Milan D. PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3344 AB - The crystal and molecular structures of four tetrahedral structurally similar [Co(aamp)(2)X-2] complexes (aamp = 4-acetyl-3-amino-5-methylpyrazole, X = Cl, Br, I and NCS) were determined by X-ray diffraction analysis and are discussed in detail. It was found that the different capacity of the ligand X (NCS vs. Cl, Br, I) for the formation of non-bonding contacts influence the mode of molecular association in the solid state. The complexes were characterized by UV-Vis spectroscopy. The first step of the thermal decomposition of the compounds was checked and is discussed in the view of the IR spectrum of the intermediate isolated from [Co(aamp)(2)Br-2] by the quasi-isothermal technique. T2 - Journal of the Serbian Chemical Society T1 - Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole VL - 72 IS - 12 SP - 1281 EP - 1293 DO - 10.2298/JSC0712281L ER -
@article{ author = "Leovac, Vukadin M. and Tomić, Zoran D. and Szecsenyi, Katalin Meszaros and Jovanović, Ljiljana S. and Joksović, Milan D.", year = "2007", abstract = "The crystal and molecular structures of four tetrahedral structurally similar [Co(aamp)(2)X-2] complexes (aamp = 4-acetyl-3-amino-5-methylpyrazole, X = Cl, Br, I and NCS) were determined by X-ray diffraction analysis and are discussed in detail. It was found that the different capacity of the ligand X (NCS vs. Cl, Br, I) for the formation of non-bonding contacts influence the mode of molecular association in the solid state. The complexes were characterized by UV-Vis spectroscopy. The first step of the thermal decomposition of the compounds was checked and is discussed in the view of the IR spectrum of the intermediate isolated from [Co(aamp)(2)Br-2] by the quasi-isothermal technique.", journal = "Journal of the Serbian Chemical Society", title = "Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole", volume = "72", number = "12", pages = "1281-1293", doi = "10.2298/JSC0712281L" }
Leovac, V. M., Tomić, Z. D., Szecsenyi, K. M., Jovanović, L. S.,& Joksović, M. D.. (2007). Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole. in Journal of the Serbian Chemical Society, 72(12), 1281-1293. https://doi.org/10.2298/JSC0712281L
Leovac VM, Tomić ZD, Szecsenyi KM, Jovanović LS, Joksović MD. Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole. in Journal of the Serbian Chemical Society. 2007;72(12):1281-1293. doi:10.2298/JSC0712281L .
Leovac, Vukadin M., Tomić, Zoran D., Szecsenyi, Katalin Meszaros, Jovanović, Ljiljana S., Joksović, Milan D., "Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole" in Journal of the Serbian Chemical Society, 72, no. 12 (2007):1281-1293, https://doi.org/10.2298/JSC0712281L . .