forthcoming articles

Multiple-Edge Anomalous Diffraction (MEAD) has been applied to various quaternary sulfosalts belonging to the adamantine compound family in order to validate the distribution of copper, zinc and iron cations in the structure. Application of this technique confirms established cation distribution in Cu₂ZnSnSe₄ (CZTSe) and Cu₂FeSnS₄ (CFTS), but in Cu₂ZnSiSe₄ (CZSiSe) the cation distribution is shown to adopt a highly ordered wurtz-kesterite structure type in contrast to the literature.

The synthesis, crystal structure and stability of the γ-brass-related complex phase γ₁-AuZn_2.1 in the Au–Zn birnary system are reported. The compound has been described as consisting of two main building units, i.e. a 38-atom modified Pierce cluster and an intergrown 19-atom double icosahedron.

Experimental charge density distribution of abiraterone acetate is reported. Intermolecular interactions in the crystals of abiraterone, abiraterone acetate and abiraterone complexes with cytochrome P450 binding pocket are compared.

The first bis­muth borate oxyiodide, Bi₄BO₇I, is incommensurately modulated with q = 0.242 (3)c*. The wavevector is very close to the rational value of c*/4, yet refinement based on commensurate modulation faces essential[serious] problems indicating the incommensurate nature of the modulation.

A new cocrystal of L-ascorbic and picolinic acids is reported. The relationship between the con­formation of the L-ascorbic acid molecule and its effective charge in the new cocrystal, as well as in pure ascorbic acid and 12 previously documented L-ascorbic acid cocrystals, is discussed.

The structure of Pb₂SnO₄ is found to strongly distort on compression and a structural phase transition with a change of space group from Pbam to Pnam occurs at ∼11 GPa. Our complementary DFT-based calculations show that at ambient conditions, the channels in the structure host the stereochemically active Pb 6s² lone electron pairs which form bonds between the Pb atoms with increasing pressure.