1-[(Z)-1-Bromo-2-(butyl-dichloro-λ-tellan-yl)ethen-yl]cyclo-hex-1-ene.

The Te(IV) atom in the title compound, [Te(C(4)H(9))(C(8)H(10)Br)Cl(2)] or C(12)H(19)BrCl(2)Te, is in a distorted ψ-trigonal-bipyramidal geometry, with the lone pair of electrons projected to occupy a position in the equatorial plane, and with the Cl atoms being mutually trans [172.48†(4)°]. Close intra-molecular [Te⋯Br = 3.3444†(18)†à ] and inter-molecular [Te⋯Cl = 3.675†(3)†à ] inter-actions are observed. The latter lead to centrosymmetric dimers which assemble into layers in the bc plane. The primary connections between layers are of the type C-H⋯Cl.