A comparative study of sparteine, α-isosparteine and 2-methylsparteine monoperchlorate salts and zinc (II) complexes by NMR chemical shifts

The 13C and 1H NMR spectra of zinc (II) complexes of sparteine, α-isosparteine and 2-methylsparteine were recorded and complexation effects were determined. The structures in solution were compared with those in solid state. The reference compounds for discussing the structure of complexes studied were the monoperchlorate salts.