Abstract
The crystal and molecular structure of diphenyl telluroxide has been determined by X-ray diffraction at room temperature. The crystals are monoclinic, space group Cc, with a= 31.310(12), b= 5.629(1), c= 18.025(6)A, β= 139.18(1)°, U= 2 076.7(10)A3, and Z= 8. The structure has been refined to a final R 0.038 for 1 910 independent reflections (four-circle diffractometer measurements). It consists of Ph2TeO monomers [Te–C 2.137(average), TeO 1.890 A(average)] linked by short Te–O secondary bonds [Te–O 2.554 A(average)] to give unsymmetrical dimers. Much longer interactions between dimers [Te ⋯ O 3.771 A(average)] occupy the fifth positions of octahedra around each Te atom.
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