Strontium thiocyanate

{{short description|Water-soluble salt}}

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|Section1={{Chembox Identifiers

| CASNo = 18807-10-8

| ChemSpiderID = 57450760

| PubChem = 57370878

| StdInChI=1S/2CHNS.Sr/c2*2-1-3;/h2*3H;/q;;+2/p-2

| StdInChIKey = YNQRWDDCTKWYJP-UHFFFAOYSA-L

| SMILES = C(#N)[S-].C(#N)[S-].[Sr+2]

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|Section2={{Chembox Properties

| Sr = 1|S=2|N=2|C=2

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| Appearance = white solid

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| MeltingPt = 331–379 °C

| MeltingPt_notes = (decomposes at 650 °C)

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| Section3 = {{Chembox Structure

| Structure_ref = {{cite journal |last1=Wickleder |first1=Claudia |title=M(SCN)₂ (M = Eu, Sr, Ba): Kristallstruktur, thermisches Verhalten, Schwingungsspektroskopie |lang=de |trans-title=M(SCN)₂ (M = Eu, Sr, Ba): Crystal structure, thermal behavior, vibrational spectroscopy |journal=Zeitschrift für anorganische und allgemeine Chemie |date=July 2001 |volume=627 |issue=7 |pages=1693–1698 |doi=10.1002/1521-3749(200107)627:7<1693::AID-ZAAC1693>3.0.CO;2-U}}

| CrystalStruct = Monoclinic

| SpaceGroup = C2/c

| PointGroup = 2/m

| LattConst_a = 9.86 Å

| LattConst_b = 6.63 Å

| LattConst_c = 8.20 Å

| LattConst_beta = 91.3

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| UnitCellFormulas = 4

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|Section4={{Chembox Hazards

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Strontium thiocyanate refers to the salt {{chem2|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.{{rp|pp=1695–1696}} The motif is reminiscent of the fluorite structure.{{cite journal |doi=10.1021/acs.inorgchem.4c00920 |title=Inorganic Metal Thiocyanates |date=2024 |last1=Cliffe |first1=Matthew J. |journal=Inorganic Chemistry |volume=63 |issue=29 |pages=13137–13156 |pmid=38980309 |pmc=11271006 }} The same structure is observed for Ca(SCN)₂, Ba(SCN)₂, and Pb(SCN)₂.{{cite journal |doi=10.1107/S0567740875002300 |title=The crystal structure of lead(II) thiocyanate |date=1975 |last1=Mokuolu |first1=J. A. A. |last2=Speakman |first2=J. C. |journal=Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry |volume=31 |issue=1 |pages=172–176 |bibcode=1975AcCrB..31..172M }}

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