TETRAHYDROFURAN ADDUCTS OF A CHLOROBISMUTHATE(II) ANION AND ANTIMONY TRIIODIDE

Tetrahydrofuran (thf) adducts of a chlorobismuthate(III) and of antimo ny triiodide have been pre and characterized by X-ray crystallography. The former compound, bis[tetrakis(tetrahydrofuran-O)-lithium(I)] bis[ trichloro(tetrahydrofuran-O)-bismuthate(III)], [Li(C4H8O)(4)](2)[Bi2Cl 8(C4H8O)(2)], contains centrosymmetric edge-shared bi-octahedral diani ons with the formula [Bi2Cl6(thf)(2)(mu-Cl)(2)](2-) in which the thf l igands occupy terminal sites at 90 degrees to the Bi-2(mu-Cl)(2) plane ; the cations are [Li(thf)(4)](+). The latter structure, triiodo(tetra hydrofuran-O)antimony(III), [SbI3(C4H8O)], comprises a polymeric arran gement of SbI3(thf) units, the antimony centres being bridged alternat ely by pairs of I atoms and pairs of thf ligands.