A solution of sodium in liquid ammonia reacts with Sb2S3 to form large colo
rless crystals of the composition Na3SbS3. 10 NH3. The trigonal-pyramidal S
bS33- anion is ion-paired with three Na+ counter ions, the coordination sph
eres of which are completed by eight ammine ligands. The resulting neutral
[Na(NH3)(3)](2)-[Na(NH3)(2)]SbS3 Molecules crystallize together with two am
monia molecules of solvation in the space group P2(1)/c (a = 9.828(2), b =
6.0702(4), c = 33.4377(6) Angstrom, beta = 91.362(7)degrees, V= 1994.2(5) A
ngstrom (3), Z = 4).