Paramagnetische Elektronenresonanz von 99Tc(IV) in Hexahalogeno-Komplexen

Abstract

The hyperfine structure of 99Tc (IV) in mixed crystals of K2[TcCle] — K2 [PtCl6] and K2 [TcF,] —K2 [PtFe] was measured at 3 cm wavelength and at 1.7°K and 77°K respectively. The parameters of the chloro-complex are gmax =1.9896, gmin =1.9876, Amax=1.361 × 10-2 cm-1, Amin = 1.337 × 10-2 cm-1; in addition to the Δm=0 transitions, the forbidden Δm= ±1 transitions were observed. The parameters of the polycrystalline fluoro-complex were determined to g=3.884, A=3.34 × 10-2 cm-1, B=1.76 × 10-2 cm-1.