Some cyclic tetra-amines and their metal-ion complexes. Part II. Complexes of cobalt(III) with two isomeric hexamethyl-1,4,8,11-tetra-azacyclotetradecanes and monodentate ligands
- 1 January 1966
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 867-871
- https://doi.org/10.1039/j19660000867
Abstract
Cobalt(III) derivatives of two isomeric cyclic tetra-amines (hexamethyl-1,4,8,11-tetra-azacyclotetradecane—teta and tetb), are prepared by oxidation of equimolar amounts of the amine and a cobalt(II) salt, in aqueous ethanol buffered to pH∼6. The trans derivatives [Co(teta)(H2O)2]3+, [Co(teta)XY]+, (X = Y = OH–, Cl–, Br–, NCS–, NO2 –, CN–; X = NO2 –, Y = OH–; X = Cl–, Y = N3 –), [Co(teta)(H2O)(NO2)]2+, and [Co(tetb)X2]+(X = Cl–, CN–, N3 –, NO2 –) are described.Keywords
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