1-Chlorofuro[3,2-e][2,1,3]benzoxatellurazole

Acta Crystallogr C. 2013 Feb;69(Pt 2):156-7. doi: 10.1107/S0108270112050196. Epub 2013 Jan 5.

Abstract

The title compound, C(8)H(4)ClNO(2)Te, represents the first reported example of a benzofuran-derived 2,1,3-benzoxatellurazole derivative. While it can be formally described as a nitrosoaryltellurium monochloride, its Te-O and Te-C bond lengths of 2.1421 (14) and 2.0374 (17) Å, respectively, characterize it as a planar tricyclic aromatic containing a Te=C double bond. Its formation suggests that derivatives of 2-cyclohexenone oxime in general react with tellurium dioxide to form aryl-2,1,3-benzoxatellurazoles.