Strontium thiocyanate
From Wikipedia, the free encyclopedia
Sr2+ [N≡C−S−]2 | |
| Identifiers | |
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3D model (JSmol) |
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| ChemSpider | |
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[1] | |
| Monoclinic | |
| C2/c | |
| 2/m[2] | |
a = 9.86 Å, b = 6.63 Å, c = 8.20 Å α = 90°, β = 91.3°, γ = 90° | |
Formula units (Z) |
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.[1]: 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.[2]
