PREPARATION AND SOME PROPERTIES OF TETRACYANO COMPLEXES M(EN)M'(CN)4(M=CD(II), MN(II) M'=NI(II), CD(II))

Two new tetracyano complexes of the composition MnenNi(CN)4 and MnenCd (CN)4 were prepared and identified. Their structure and properties wer e investigated by IR and UV-VIS spectroscopy, X-ray powder diffraction and by measuring magnetic moments. The results were confronted with t he structure and properties of the compounds CdenNi(CN)4 and CdenCd(CN )4. The results of this study show a considerable similarity between t hese groups of compounds. The thermal behaviour of all the examined co mpounds was investigated derivatographically. The following order of t hermal stability of the investigated complexes was observed: Cd-Cd(215 -degrees-C) < Mn-Cd(250-degrees-C) < Cd-Ni(275-degrees-C) < Mn-Ni(310- degrees-C)