The first mixed iodide-dithiocarbamate complex of selenium(II): Catena-poly[[(di-n-propyldithiocarbamato-S,S′)selenium(II)]-μ-iodo]

The title compound, [SeI(C7H14NS2)]n, was prepared by the oxidative displacement of one of the dithiocarbamates in bis(di-n-propyldithiocarbamato)-selenium(II) using iodine. This complex has a polymeric structure, with the central Se atoms bridged by the iodine ions. The geometry around each Se atom is planar trapezoidal (SeS2I2), with Se - I distances of 3.124(2) and 3.232 (I) Å. This is the first example of a mixed iodide-dithiocarbamate complex of selenium(II).