Strontium thiocyanate

Strontium thiocyanate refers to the saltSr(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. The motif is reminiscent of the fluorite structure. The same structure is observed for Ca(SCN)2, Ba(SCN)2, and Pb(SCN)2.

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

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