The structure of [NH2(CH3)(2)](2)[BiCl5] is characterized by hexacoord
inate Bi, forming a [BiCl5](4-)(2) dimer [i.e. di-mu-chloro-bis(tetrac
hlorobismuth)] with the geometry of two slightly distorted octahedra s
haring one edge. The two bridging Cl atoms are connected to the Bi ato
m by long bonds [2.906 (3) and 2.922 (3) Angstrom]. The other Bi-Cl di
stances are shorter [2.566 (3)-2.741 (3) Angstrom] and are characteris
tic of 'free' Cl atoms. The dimethylammonium groups are connected via
hydrogen bonds to the Cl atoms, The NH ... Cl bonds vary in length fro
m 3.22 (1) to 3.280 (9) Angstrom.