Spectra are reported for all seven methylquinolines, nine dimethylquinolines, six methylisoquinolines and one dimethylisoquinoline. Substituent effects for the a, ortho, rneta, para, vinylogous para and peri positions are reported for the monornethylcompounds. Additivity of these substituent effects is demonstrated for the dimethyl compounds which also exhibit a uicinal dimethyl steric effect.

No abstract

Carbon-13 chemical shift assignments are reported for four chloroqninolines, six chloroisoquinolines, one dichloroquinolme, four dichloroisoquinolmes, four methylchloroquinolines, two methylcbloroisoquinolines, quinoline N-oxide, isoquiwline N-oxide, five methylquinoline N-oGdes, two methylwoquinolme N-oxides and three chloroisoquinoline N-oxides. Chlorine substituent chemical shift (SCS) effects are reported for the alpha, ortho, meta, para and peri positions. Consistent patterns are observed for the para and peri positions, a vinylogous ortho pattern is reported and the additivity of these SCS effects is demonstrated. Alpha SCS effects vary widely from 1.1 ppm upfield in l-chloroisoquinolme to 6.7 ppm downfield in 4-chloroquinolie. These results, together with those in the literature, permit the definition of steric and nitrogen lone-pair conlriibutions which m o m the 'normal' chlorine SCS effect, and these modifying contributions are shown to be roughly additive.Large (6-16ppm) upfield shifts are observed for the carbons ortho and para to the N-oxide group. The individual magnitudes of these shifts and their sum are constant and the effects are additive in substituted systems. A 9.5ppm upfield shift is also observed for C-8 in quinoline N-oxides which is attributed to a spacecharge interadon. Substituent chemical shift (SCS) effects for the chloro and methyl groups and the chemical shifts of the methyl carbons are essentially the same in the N-oxides as in the parent heterocycles and are additive, except for those molecules where the substituent is adjacent to the N-oxide moiety, in which cases substantial interactions are observed.

Gold bildet mit dem Liganden einen 1:1‐Komplex, dem aufgrund von Elementaranalyse und Molgewichtsbestimmung die tetramere Form (I) zugeordnet wird.