Scheme 2.

Products isolated from the reaction of FeCl2 and [PNP][SNO], including the solid state structure of [Fe(NO)(SH)Cl2]− in 2. Ellipsoids are shown at 50% probability levels. White, blue, red, green, orange and yellow ellipsoids represent H, N, O, Cl, Fe and S atoms, respectively. The [PNP]+ cation is omitted for clarity.