Collection of Czechoslovak Chemical Communications - digital archive 

Abstract

A critical review of the oxides and oxyacids of tellurium is presented. The crystal chemistry of the compounds is discussed in detail. The average bond distances and angles of the Te(IV)O₄, Te(VI)O₆, Te(VI)-O-H...O-Te(VI) and Te-O-Te groups have been calculated by statistical evaluation of the geometry of the structures. The deviation of Te(VI)O₆ from the average geometry were quantitatively characterized by distortion indices. The Te(IV)O₄ and Te(VI)O₆ groups were evaluated also by the bond valences s(Te-O). The compounds whose distortion indices or Σs(Te-O) values were outside the interval x ± 3σ should be checked.