期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 27, 期 54, 页码 13552-13557出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202102058
关键词
alkali-metals; crystallography; selenocyanates; solid-phase synthesis; vibrational spectroscopy
资金
- Fonds der Chemischen Industrie
- Projekt DEAL
The study synthesized a full series of quasibinary alkali-metal selenocyanates and investigated their structures and properties. Among them, Li[SeCN] exhibited unique characteristics with a possible phase transition.
The full series of quasibinary alkali-metal selenocyanates was synthesized either by oxidation of the respective cyanides (A=Li-Rb) or by metathesis (A=Cs). For Li[SeCN] only ball-milling and subsequent annealing led to the isolation of the quasibinary selenocyanate. Their structures were refined from single-crystal and powder X-ray data. The respective solid-state IR and Raman spectra were interpreted with the aid of solid-state quantum-mechanical calculations and DSC-TGA measurements allowed for extraction of melting points. Only for Li[SeCN] a possible phase transition was observed that is discussed on the basis of VT-PXRD experiments. It is also the only quasibinary selenocyanate to form a hydrate (Li[SeCN] . 2H(2)O).
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