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Mehrkernige Kobaltkomplexe. V. Präparative Herstellung von Tetrakis (äthylendiamin)‐μ‐peroxo‐μ‐amido‐ und μ‐peroxo‐μ‐thiocyanatodikobalt (III)‐Komplexen ausgehend von Tetrakis (äthylendiamin)bis‐(ammin)‐μ‐peroxo‐dikobalt (III)‐tetraperchlorat
Author(s) -
Zehnder Margareta
Publication year - 1979
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19790620836
Subject(s) - chemistry , ethylenediamine , thiocyanate , cobalt , ligand (biochemistry) , polymer chemistry , medicinal chemistry , inorganic chemistry , receptor , biochemistry
Polynuclear Cobalt Complexes. V. Preparation of tetrakis (ethylenediamine)‐μ‐peroxo‐μ‐amido and μ‐peroxo‐μ‐thiocyanato‐dicobalt (III) complexes starting from tetrakis (ethylenediamine)bis‐(ammine)‐μ‐peroxo‐dicobalt (III)‐tetraperchlorate Racemic tetrakis (ethylenediamine)‐μ‐peroxo‐μ‐amido‐dicobalt (III) thiocyanate and its corresponding hydroperoxo‐ and superoxo‐complexes have been isolated from [(en) 2 (NH 3 )Co(O 2 )(NH 3 )(en) 2 ](ClO 4 ) 4 . A new binuclear peroxo complex containing thiocyanate as bridging ligand was prepared by the same method. The stretching frequencies of the CN‐ and CS‐group as well as the NCS‐bending frequence in the IR. spectrum of [(en) 2 Co(O 2 , SCN)Co(en) 2 ](NO 3 ) 3 suggest that the μ‐thiocyanato group is N ‐bonded (2050, 750, 475 cm −1 ). A comparison of IR. spectra of known singly and doubly bridged μ‐peroxo complexes is made. Characteristic absorption bands, assignable to ν(OO) and ν(CoO) are given.