| Autor: |
Näther C; Institut für Anorganische Chemie, Universität Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany., Boeckmann J; Institut für Anorganische Chemie, Universität Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany. |
| Jazyk: |
angličtina |
| Zdroj: |
Acta crystallographica. Section E, Crystallographic communications [Acta Crystallogr E Crystallogr Commun] 2023 Jan 12; Vol. 79 (Pt 2), pp. 90-94. Date of Electronic Publication: 2023 Jan 12 (Print Publication: 2023). |
| DOI: |
10.1107/S2056989023000245 |
| Abstrakt: |
The reaction of nickel chloride hexa-hydrate with potassium seleno-cyanate and pyridine in water leads to the formation of crystals of the title complex, [Ni(NCSe) 2 (C 5 H 5 N) 4 ], which were characterized by single-crystal X-ray diffraction. Its crystal structure consists of discrete complexes, located on centers of inversion, in which the Ni cations are sixfold coordinated by two terminal N-bonded seleno-cyanate anions and four pyridine ligands within a slightly distorted octa-hedral coordination. In the crystal, the complexes are connected by weak C-H⋯Se inter-actions. PXRD investigations revealed that a pure crystalline phase has formed. In the IR and Raman spectra, the C-N stretching vibrations are observed at 2083 and 2079 cm -1 , respectively, in agreement with the presence of only terminally bonded anionic ligands. Upon heating, one well-resolved mass loss is observed, in which two of the four pyridine ligands are removed, leading to a compound with the composition Ni(NCSe) 2 (C 5 H 5 N) 2 . In this compound, the C-N stretching vibration is shifted to 2108 cm -1 (Raman) and 2115 cm -1 (IR), indicating the presence of μ-1,3-bridging anionic ligands. In its PXRD pattern, very broad reflections are observed, indicating for poor crystallinity and/or very small particle size. This crystalline phase is not isotypic to its Co and Fe analogs.
(© Näther and Boeckmann 2023.) |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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