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Atomistry » Carbon » Chemical Properties » Isoperthiocyanic Acid | ||
Atomistry » Carbon » Chemical Properties » Isoperthiocyanic Acid » |
Isoperthiocyanic Acid, C2S3(NH)2
Isoperthiocyanic Acid, C2S3(NH)2, as stated above, is formed by the action of acid of moderate strength - e.g. 40 per cent, hydrochloric acid - on ammonium thiocyanate. It can be crystallised from water in golden-yellow needles, and is reconverted by potassium cyanide into thiocyanate:
C2S3N2H2 + KCN = CNSK + 2CNSH. That it is probably an iso-acid containing imide groups is shown by its reduction by nascent hydrogen to thiourea and carbon disulphide: C2S3(NH)2 + 2H = CS(NH2)2 + CS2. Salts of the isomeric normal perthiocyanic acid, C2N2S(SH)2, are formed by the action of alkalis on the iso-acid, but the free acid is unstable. Normal and iso-dithiocyanic acid, ![]() ![]() |
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