Crystal structure and spectral studies of a novel manganese(II) complex of 4-phenyl-2-acetylpyridine thiosemicarbazone: Extended network of [Mn(Ac4Ph)(2)] via hydrogen bond linkages and pi-pi interactions

 
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2005 (EN)
Crystal structure and spectral studies of a novel manganese(II) complex of 4-phenyl-2-acetylpyridine thiosemicarbazone: Extended network of [Mn(Ac4Ph)(2)] via hydrogen bond linkages and pi-pi interactions (EN)

Kovala-Demertzi, D. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Kovala-Demertzi, D. (EN)

The reaction of Mn(CH3COO)(2) center dot 4H(2)O with 4-phenyl-2-acetylpyridine thiosemicarbazone, HAc4Ph, yielded the novel six-coordinate complex [Mn(Ac4Ph)(2)]. The complex has been characterized by spectral (IR and EPR) and X-ray diffraction methods. EPR spectra were recorded with the external magnetic field oriented either perpendicular or parallel to the microwave magnetic field. In perpendicular mode, signals are observed in a wide spectral region. Of importance are the broad feature in the low field region and the broad absorption peaks at g similar to 5.3 and g similar to 3.07. The lack of resolved hyperfine patterns is attributed to a distribution on the zero field splitting parameters. The X-ray structural analysis showed that [Mn(Ac4Ph)(2)] has a centrosymmetric distorted octahedral geometry with the MnN4S2 chromophore. Intermolecular hydrogen bonds of the DA=AD type and pi-pi interactions stabilize the structure and result in the formation of infinite layers. (c) 2005 Elsevier B.V. All rights reserved. (EN)

thiosemicarbazone (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Inorganic Chemistry Communications (EN)

2005

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