Spectrochemical Study of Microscopic Crystals. IX. Absorption Spectra and Structure of Cobalt(II) Mercury(II) Tetrathiocyanate

Abstract
Polarized absorption spectra of CoHg(SCN)4 in the crystalline state have been determined by Tsuchida-Kobayashi’s microscopic method in the regions between 2400 and 7000 Å. Absorption spectra of HgCo(NCS)4 shows the existence of the Co(NCS)4-group. Thus it has been concluded that the NCS-group is attached to a cobalt atom through a nitrogen atom, and to a mercury atom through a sulphur atom on the other end of the NCS-group.