Strontium thiocyanate refers to the salt Sr(SCN)2. It is a colorless solid. According to X-ray crystallography, it is a coordination polymer. The Sr2+ ions are each coordinated to eight thiocyanate anions in a distorted square antiprismatic molecular geometry where each square face contains two adjacent S atoms and two adjacent N atoms.[2]: 1695–1696  The motif is reminiscent of the fluorite structure.[3] The same structure is observed for Ca(SCN)2, Ba(SCN)2, and Pb(SCN)2.[1]

Solid Sr(SCN)2 has a complicated polymeric structure as is revealed by this image of a fragment of the lattice. Color code: Sr = turquoise, N = blue, C = gray, S = orange.

References

  1. ^ a b Mokuolu, J. A. A.; Speakman, J. C. (1975). "The crystal structure of lead(II) thiocyanate". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 31 (1): 172–176. Bibcode:1975AcCrB..31..172M. doi:10.1107/S0567740875002300.
  2. ^ a b Wickleder, Claudia (July 2001). "M(SCN)2 (M = Eu, Sr, Ba): Kristallstruktur, thermisches Verhalten, Schwingungsspektroskopie" [M(SCN)2 (M = Eu, Sr, Ba): Crystal structure, thermal behavior, vibrational spectroscopy]. Zeitschrift für anorganische und allgemeine Chemie (in German). 627 (7): 1693–1698. doi:10.1002/1521-3749(200107)627:7<1693::AID-ZAAC1693>3.0.CO;2-U.
  3. ^ Cliffe, Matthew J. (2024). "Inorganic Metal Thiocyanates". Inorganic Chemistry. 63 (29): 13137–13156. doi:10.1021/acs.inorgchem.4c00920. PMC 11271006. PMID 38980309.
Allikas: https://en.wikipedia.org/wiki/Strontium_thiocyanate
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