Synthesis, crystal structure and properties of catena-poly[[bis(4-methylpyridine-κN)cobalt(II)]-di-μ-thiocyanato-κ2N:S;κ2S:N], which shows a rare coordination geometry

Reaction of Co(NCS)2 with 4-methylpyridine in water leads to the formation of single crystals of the title compound, [Co(NCS)2(C6H7N)2]n. The asymmetric unit consists of two crystallographically independent thiocyanate anions and two crystallographically independent 4-methylpyridine coligands in gen...

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Main Authors: Christian Näther, Jan Boeckmann
Format: Article
Language:English
Published: International Union of Crystallography 2025-01-01
Series:Acta Crystallographica Section E: Crystallographic Communications
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Online Access:https://journals.iucr.org/paper?S2056989024012003
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author Christian Näther
Jan Boeckmann
author_facet Christian Näther
Jan Boeckmann
author_sort Christian Näther
collection DOAJ
description Reaction of Co(NCS)2 with 4-methylpyridine in water leads to the formation of single crystals of the title compound, [Co(NCS)2(C6H7N)2]n. The asymmetric unit consists of two crystallographically independent thiocyanate anions and two crystallographically independent 4-methylpyridine coligands in general positions, as well as of two different CoII cations, of which one is located on a twofold rotational axis, whereas the second occupies a center of inversion. The methyl H atoms in both 4-methylpyridine ligands are disordered and were refined using a split model. Both CoII cations are octahedrally coordinated by two N- and two S-bonded thiocyanate anions and two 4-methylpyridine coligands and are linked by pairs of 1,3-bridging anionic ligands into chains. Within these chains the cations show an alternating all-trans and cis–cis–trans configuration, which leads to the formation of corrugated chains. Powder X-ray diffraction proves that a pure crystalline phase has been obtained and the values of the CN stretching vibrations of the anionic ligands observed in the IR and the Raman spectra are in agreement with the presence of bridging anionic ligands.
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spelling doaj-art-7cee34f99c624501a42a534d086b95c42025-01-06T09:23:11ZengInternational Union of CrystallographyActa Crystallographica Section E: Crystallographic Communications2056-98902025-01-01811586210.1107/S2056989024012003ox2010Synthesis, crystal structure and properties of catena-poly[[bis(4-methylpyridine-κN)cobalt(II)]-di-μ-thiocyanato-κ2N:S;κ2S:N], which shows a rare coordination geometryChristian Näther0Jan Boeckmann1Institut für Anorganische Chemie, Universität Kiel, Max-Eyth.-Str. 2, 24118 Kiel, GermanyInstitut für Anorganische Chemie, Universität Kiel, Max-Eyth.-Str. 2, 24118 Kiel, GermanyReaction of Co(NCS)2 with 4-methylpyridine in water leads to the formation of single crystals of the title compound, [Co(NCS)2(C6H7N)2]n. The asymmetric unit consists of two crystallographically independent thiocyanate anions and two crystallographically independent 4-methylpyridine coligands in general positions, as well as of two different CoII cations, of which one is located on a twofold rotational axis, whereas the second occupies a center of inversion. The methyl H atoms in both 4-methylpyridine ligands are disordered and were refined using a split model. Both CoII cations are octahedrally coordinated by two N- and two S-bonded thiocyanate anions and two 4-methylpyridine coligands and are linked by pairs of 1,3-bridging anionic ligands into chains. Within these chains the cations show an alternating all-trans and cis–cis–trans configuration, which leads to the formation of corrugated chains. Powder X-ray diffraction proves that a pure crystalline phase has been obtained and the values of the CN stretching vibrations of the anionic ligands observed in the IR and the Raman spectra are in agreement with the presence of bridging anionic ligands.https://journals.iucr.org/paper?S2056989024012003synthesiscrystal structurecoordination polymerchain structurespectroscopic propertiescobalt thiocyanate4-methylpyridine
spellingShingle Christian Näther
Jan Boeckmann
Synthesis, crystal structure and properties of catena-poly[[bis(4-methylpyridine-κN)cobalt(II)]-di-μ-thiocyanato-κ2N:S;κ2S:N], which shows a rare coordination geometry
Acta Crystallographica Section E: Crystallographic Communications
synthesis
crystal structure
coordination polymer
chain structure
spectroscopic properties
cobalt thiocyanate
4-methylpyridine
title Synthesis, crystal structure and properties of catena-poly[[bis(4-methylpyridine-κN)cobalt(II)]-di-μ-thiocyanato-κ2N:S;κ2S:N], which shows a rare coordination geometry
title_full Synthesis, crystal structure and properties of catena-poly[[bis(4-methylpyridine-κN)cobalt(II)]-di-μ-thiocyanato-κ2N:S;κ2S:N], which shows a rare coordination geometry
title_fullStr Synthesis, crystal structure and properties of catena-poly[[bis(4-methylpyridine-κN)cobalt(II)]-di-μ-thiocyanato-κ2N:S;κ2S:N], which shows a rare coordination geometry
title_full_unstemmed Synthesis, crystal structure and properties of catena-poly[[bis(4-methylpyridine-κN)cobalt(II)]-di-μ-thiocyanato-κ2N:S;κ2S:N], which shows a rare coordination geometry
title_short Synthesis, crystal structure and properties of catena-poly[[bis(4-methylpyridine-κN)cobalt(II)]-di-μ-thiocyanato-κ2N:S;κ2S:N], which shows a rare coordination geometry
title_sort synthesis crystal structure and properties of catena poly bis 4 methylpyridine κn cobalt ii di μ thiocyanato κ2n s κ2s n which shows a rare coordination geometry
topic synthesis
crystal structure
coordination polymer
chain structure
spectroscopic properties
cobalt thiocyanate
4-methylpyridine
url https://journals.iucr.org/paper?S2056989024012003
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AT janboeckmann synthesiscrystalstructureandpropertiesofcatenapolybis4methylpyridinekncobaltiidimthiocyanatok2nsk2snwhichshowsararecoordinationgeometry