Particles of (a) Phase 1 (ZnSb) and (b) Phase 2 (Zn1+δSb) of a new thermoelectric ZnSb system. Projections of the full three-dimensional reciprocal space from ADT for (c) Phase 1 and (d) Phase 2. Structures of (e) Phase 1 and (f) Phase 2 determined by SIR2008. Reprinted (adapted) with permission from Birkel et al. (2010). Copyright (2010) the American Chemical Society.