Ultraviolet measurements in potassium bromide disks of the 2:1 complexes of 8-aminoquinoline with the chlorides of Mg, Ni(II) and Pd(II), and the 1.1 complexes with the chlorides of Zn, Cd and Cu(II) show a shift toward shorter wavelengths from that of the 8-aminoquinoline in the 300 millimicron region. The extent of the shift is almost identical for the Mg, Zn, Cd, Ni(II) and Cu(II) chelates, indicating that the metals are equally effective in blocking the resonance between the amino group and the quinoline ring by the nitrogen-to-metal bond formation. The ultraviolet spectra of the complexes of 8-aminoquinoline in dioxane do reveal differences in the values of the long wavelength maxima. Absorption patterns in the 3 micron region reveal the expected decrease in the frequencies of the N-H stretching vibration on chelation.

PDF Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription