The final class of ternaries are those with no extended coordination, which can be called salts, or vacancy-ordered derivatives of framework-structures as appropriate (Fig. ). Coordination to alkali metals is neglected as the bonding is primarily ionic, non-directional and hence not framework-forming. Anionic homoleptic metal thiocyanate complexes are probably the most diverse family of metal thiocyanate compounds, but reported crystal structures typically include organic countercations or solvent. There are thus surprisingly few crystal structures of purely inorganic ternary thiocyanate salts.