cis-Bis(dimethyl sulfide)dinitratoplatinum(II) at 295 and 150 K

The title compound, [ Pt( NO3)(2)( C2H6S)(2)], crystallizes in the P2(1)/ n space group ( Z' = 2), with pseudo- square- planar coordination geometry. The complex forms dimers with pseudosymmetry C-i arranged in columns along the b- axis direction, with Pt center dot center dot center dot Pt distances of 6.3056 ( 3) and 4.2382 ( 2) angstrom ( at 150 K). Each column is surrounded by six other columns in a honeycomb rod- like packing. The coordination mode of the nitrate ligands is monodentate, with Pt - O - N angles ranging from similar to 117 to similar to 118 degrees and a tilt between the nitrate ligands and the coordination planes in the range similar to 63 - 70 degrees ( at 150 K). The coordination mode of the nitrate ligands is compared with that observed in reported Pt( NO3)(2)L-2 complexes ( where L is a ligand with a donor atom from group 15 or 16), all of which are monodentate, with an average Pt - O - Nangle of 118 ( 2) degrees and a tilt in the range 90 +/- 30 degrees ( with two exceptions, in which the nitrates are approximately in the coordination plane).