Studies on the organic mercury compound in the fish and shellfish from Minamata Bay as the causative agent of Minamata disease and the formation of the poison:Report V IR spectra of alkyl mercury compounds

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IR spectra of methyl mercury compounds have absorption spectra at about 1180cm-1, 780cm-1 and 540cm-1, each of them respectively coresponding to CH3(-Hg) symmetric deformation, CH3(-Hg) rocking and Hg-C stretching, but they show a little shift in accordance with X atoms of CH3HgX, for example the absorption corresponding to CH3(-Hg) rocking of CH3HgCl is shown at 788cm-1, that of CH3HgI at 778cm-1 and that of (CH3Hg)2S at 760cm-1. CH3HgSCH3 has absorption spectrum of CH3S- at 1311cm-1, 957cm-1 and 692cm-1, each of them respectively corresponding to CH3S- deformation, CH3S- rocking and S-C stretching, in addition to the absorption spectra of CH3(-Hg). Ethyl mercury compounds have absorption spectra at about 1175cm-1 and 520cm-1, each of them respectively corresponding to CH2(-Hg) wagging and Hg-C stretching.
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