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A series of diamagnetic macrocyclic nickel complexes I bearing substituted dibenzotetraaza[14] annulene ligands with methyl and/or phenyl groups on NCR moieties and methyl or nitro groups on the phenylen units have been prepared by Ni template synthesis from the correspon­ding 1,3-diketo- and 1,2-diamino-benzene components.  1 H and  13 C NMR data are reported and interpreted in terms of sterical and electronical changes induced by these substituents upon the ligand and compared with results of theoretical calculations. Further characterisation is based on IR, UV/Vis and mass spectroscopic measurements.

zeitschrift für naturforschung b

Synthese und spektroskopische Untersuchungen von Nickelkomplexen mit substituierten Dibenzotetraaza[14]. Annulenliganden Synthesis and Spectroscopic Studies on Nickel Complexes with Substituted Dibenzozetraaza[14] Annulenes