Doppelkomplexsalze des Thioharnstoffs und der Thiocyanat-Ionen mit den Übergangsmetallen Cd(II), Cu(II) und Co(II)

Three new double complex compounds with the following compositions were obtained:Cd(thio)₄]·Cd(SCN)₄],Cd(thio)₄]·Co(SCN)₄], Cu(thio)₄] Cd₂(SCN)₆].Some of their physical properties including melting points and electric conductivity have been determined. The study of their IR-spectra shows that the metal-thiourea bond in the complex cation is formed via the sulphur atom. The Co-SCN bond in the complex anion Co(SCN)₄]^2– is formed through the nitrogen atom, and in Cd(SCN)₄]^2– the cadnium-thiocyanate bond is probably formed with some groups through the sulphur atom, and with others through the nitrogen.In the complex anion Cd₂(SCN)₆]^2– the IR spectral data show that a bridging bond is also formed.