First example of an infinite polybromide 2D-network.

The reaction of the neutral dithiolene [Pd(Et(2)timdt)(2)] (Et(2)timdt = formally monoreduced diethylimidazolidine-2,4,5- trithione) with an excess of Br-2 yielded few crystals of [1Et.2Br](2+)(Br-)(2)(Br-2)(3) as a by-product (1(Et) = 4,5,9,10- tetrathiocino[ 1,2-b: 5,6-b']-1,3,6,8-tetraethyl-diimidazolyl-2,7- dithione); X-ray diffraction analysis showed that this compound represents the first example of a polybromide 2D-network templated by [1(Et).2Br](+2) dications, and featuring all the Br-Br distances shorter than those found in solid state bromine.