Silver cyanate

• Cyanate of silver
• Silver ( I) thiocyanate

Beige to gray powder

Fixed

4.0 g · cm -3 ( 25 ° C)

Attention

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Silver cyanate is the cyanate of silver with the formula AgOCN; it is with silver fulminate ( AgONC ), the salt of the acid pop, isomer. On these two compounds Justus Liebig and Friedrich Wöhler discovered in the 1820s, the isomerism.

Production and representation

Silver cyanate can be obtained by reaction of potassium cyanate or urea with silver nitrate.

The second equation corresponds to the reverse reaction of the first synthesis of urea in 1828 by Friedrich Wöhler.

Properties

Silver cyanate is a beige to gray powder. It crystallizes in the monoclinic crystal system, space group P21 / m with lattice parameters a = 547.3 pm, b = 637.2 pm, c = 341.6 pm and β = 91 °. In the unit cell contains two formula units.

Silver cyanate is decomposed by the action of acid, with carbon dioxide and the corresponding ammonium salt occur: