Pk. Rai et al., CR(III) COMPLEXES OF TETRAAZAMACROCYCLES DERIVED FROM ALPHA-DIKETONESAND DIAMINOALKANES, Bulletin of the Korean Chemical Society, 14(2), 1993, pp. 179-183
Template condensation of alpha-diketones such as 2,3-butanedione or be
nzil with diaminoalkanes such as 1,2-diaminoethane, 1,3-diaminopropane
, 1,4-diaminobutane, 1,6-diaminohexane, 1,8-diaminooctane or 1,12-diam
inododecane in the presence of Cr(III) results in the formation of com
plexes of the type [CrLX2]X (where L=tetraazamacrocycle having 12 to 3
2-membered ring and X=NO3- or Cl-). The complexes have been characteri
zed by elemental analyses, magnetic measurements and IR and diffuse re
flectance spectra.