forthcoming articles

In the title crystal, mol­ecular pairs are connected by C—H⋯N contacts, producing R₂²(16) motifs parallel to the (001) plane. Mol­ecules are linked by C—O⋯π and π–π inter­actions, forming layers parallel to the (100) plane. These layers are connected by C—H⋯N inter­actions.

The title ester crystallizes with equal numbers of R and S enanti­omers related by in­ver­sion symmetry. Mol­ecules are linked by inter­molecular O—H⋯O hy­dro­gen bonds to form one-dimensional chains, which are further supported by weak C—H⋯O inter­actions, giving rise to a three-dimensional supra­molecular architecture.

The crystal structure of phenyl­alanine hydro­bromide reveals a hy­dro­gen-bonded bilayer architecture further stabilized by weak C(sp²)—H⋯π inter­actions.

The single-crystal X-ray structure of (NH₄)₁₂[Mo₃₆O₁₁₂(OH)₄(H₂O)₁₀]·26H₂O reveals a new ammonium Mo₃₆ isopolymolybdate polymorph containing a 12− charged cluster whose formulation is supported by Mo—OH—Mo bond-distance analysis.

In the title com­pound, the pyrimidine ring angle at the C atom between the N atoms is very wide, whereas the angles at the ring N atoms are narrow. The mol­ecules are linked by N—H⋯N≡C and N—H⋯O=C hy­dro­gen bonds, and by short inter­centroid contacts between pairs of pyrimidine rings.

The reaction of lithium metal with dry N,N-di­methyl­acetamide and N,N-tetra­methyl­urea produced crystals of the lithium N,N-di­methyl­acetoacetamidate and N,N-tetra­methyl­urea produces crystals of the lithium bis-1,2-(N,N-di­methyl­amino)­ethan-1-one-2-olate.