Piperidinium thiocyanate

The salt pipHSCN, known as piperidinium thiocyanate or piperidine hydrothiocyanate, has a melting point of 95 °C. When metal compounds are added to this molten salt, thiocyanate complexes of the metals are produced. For example, the following reactions can be carried out at 100 °C in the presence of an excess of the amine hydrothiocyanate ... 

Disulfides can be prepared by treatment of alkyl halides with disulfide ions and also indirectly by the reaction of Bunte salts (see 10-41) with acid solutions of iodide, thiocyanate ion, or thiourea, or by pyrolysis or treatment with hydrogen peroxide. Alkyl halides also give disulfides when refluxed with sulfur and NaOH, and with piperidinium tetrathiotungstate or piperidinium tetrathiomolybdate. ... 

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