Strontium thiocyanate
Sr2+ [N≡C−S−]2
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3D model (JSmol)
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| C2N2S2Sr | |
| Molar mass | 203.78 g·mol−1 |
| Appearance | white solid |
| Melting point | 331–379 °C (decomposes at 650 °C) |
| Structure[2] | |
| Monoclinic | |
| C2/c | |
| 2/m[1] | |
a = 9.86 Å, b = 6.63 Å, c = 8.20 Å α = 90°, β = 91.3°, γ = 90°
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Formula units (Z)
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4 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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]
References
[edit]- ^ 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.
- ^ 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.
- ^ Cliffe, Matthew J. (2024). "Inorganic Metal Thiocyanates". Inorganic Chemistry. 63 (29): 13137–13156. doi:10.1021/acs.inorgchem.4c00920. PMC 11271006. PMID 38980309.
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