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Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890

November 2026 issue

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Cover illustration: Solid-state reactions at normal and at high pressures are used to produce antimonates with composition M2InSbO6, where M is a divalent first-row transition metal. These materials have a corundum-related structure and display interesting magnetic behavior. Since they are usually obtained as powders, different synthesis methods have been attempted to produce single crystals. Wolflehner & Weil [Acta Cryst. (2026). E82, 1338–1341] attempted the synthesis of Co2InSbO6 by chemical vapor transport, a method that had successfully been used to obtain single crystals of Ni2InSbO6. However, reaction with the silica glass of the reaction ampoule, produced the unexpected compound penta­cobalt(II) triindium(III) anti­mony(V) disilicon(VI) hexa­deca­oxide, Co5In3SbSi2O16.

early career research


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In the crystal structure of 2-phenyl-N-tosyl­azetidine, there are three close con­tacts stabilizing the supra­molecular structure.

research communications


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In the crystal, C—H⋯Cl and double-acceptor N—H⋯S and C—H⋯S hydrogen bonds link the mol­ecules into infinite chains parallel to the the b axis.

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The dinuclear S,N-chelate title complexes feature a halide-bridged rhomboid-shaped Cu(μ2-X)Cu (X = I, Br) core with Cu⋯Cu contacts of 2.8249 (5) and 2.7631 (6) Å, respectively. The two isostructural complexes crystallize in the triclinic space group P1 with half mol­ecule in the asymmetric unit.

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The synthesis and crystal structure of di­bromido­bis­[1-butyl-4-(pyridin-2-yl)-1,2,4-triazol-5-yl­idene]palladium(II) are presented

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In the title compound, all the cations occupy tetra­hedral sites, with the exception of rubidium, whose coordination number is twelve. The three types of tetra­hedra are linked at their vertices to form double layers stacked along the c-axis direction. The planes occupied by the rubidium ions are sandwiched between these layers.

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The title compound crystallizes in the monoclinic space group P21/c with two conformationally similar mol­ecules (Z′ = 2) in the asymmetric unit. The fused thia­zolo[3,2-a]benzimidazole framework is essentially planar, while the 4-chloro­benzoyl ring is inclined by ∼53° to the thia­zole ring in both mol­ecules. The crystal packing is consolidated by C—H⋯N hydrogen bonds, C—H⋯π contacts, and π–π stacking inter­actions, forming a three-dimensional supra­molecular framework.

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The asymmetric unit of the title compound contains two mol­ecules, A and B, with one furan ring in each mol­ecule showing ‘flip' rotational disorder. In the crystal, N—H⋯O hydrogen bonds link the mol­ecules into separate infinite ⋯A⋯A⋯A⋯ and ⋯B⋯B⋯B⋯ chains propagating along the c-axis direction.

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The title ZnII compound is a mono-periodic coordination polymer in which the doubly deprotonated phenyl­glyoxylic acid thio­semicarbazone ligand chelates one ZnII ion through O, N and S donors and bridges to the next through its second carboxyl­ate O atom.

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In the crystal of the title compound, mol­ecules are linked by inter­molecular C—H⋯O hydrogen bonds, forming a square-ring around a fourfold rotation axis parallel to the c-axis. In addition, C—H⋯π and π-π- inter­actions connect mol­ecules, forming a three-dimensional network.

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Two new layered structures of trans-di­aquabis(propane-1,3-di­amine)­nickel(II) complexes with isomeric naphthalene­disulfonate counter-ions are presented.

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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.

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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.

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

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The crystal structure of the Schiff base compound (E)-5-meth­oxy-2-[(p-tolyl­imino)­meth­yl]phenol is described, highlighting its non-planar mol­ecular conformation and intra­molecular O—H⋯N hydrogen bond. Hirshfeld surface and energy-framework analyses reveal that H⋯H contacts dominate the crystal packing, with dispersion inter­actions contributing significantly to the stabilization of the mol­ecular pairs.

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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.

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In the crystal, the mol­ecules are connected by C—H⋯O inter­actions, creating a three-dimensional framework. The mol­ecules are further connected by C—H⋯π inter­actions, forming layers parallel to the (101) plane.

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The crystal structure and Hirshfeld surface analysis of a new three-dimensional erbium(III) coordination polymer based on 2,3,5,6-tetra­bromo­benzene-1,4-di­carboxyl­ate ligand are reported.

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In the title salt, proton transfer from the carb­oxy­lic acid to the benzo­thia­zole ring N atom generates a 6-methyl-2,3-di­hydro-1,3-benzo­thia­zol-2-iminium cation and a 3-(1,3-benzo­thia­zol-2-ylsulfan­yl)propano­ate anion. The ions are linked by N—H⋯O hydrogen bonds into R22(8) motifs, which are further connected into layers parallel to (100).

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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.

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Co5In3SbSi2O16 is isotypic with Co8TeAs2O16 and comprises [CoO6], [(In,Co)O6], [SbO6], [CoO4] and [SiO4] coordination polyhedra as principal building units.

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PbTe3O8 is a mixed-valent TeIV/VI compound isotypic with SrTe3O8.

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The crystal structure of (2,2′-bi­pyridine-κ2N,N′)di­methyl­indium iodide is reported. Structural comparisons are made with other di­methyl­indium species and computational studies of [InMe2(bpy)][I] derivatives examine the possibility of controlling metal accessibility through steric manipulation of the ligand sphere.

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The low-temperature redetermination of tri­methyl­ammonium manganese(II) chloride dihydrate confirms neutral one-dimensional chains of edge-sharing trans-[MnCl4(H2O)2]n octa­hedra extending along the b-axis direction. O—H⋯Cl and N—H⋯Cl hydrogen bonds are present in the crystal.

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The title compound is a centrosymmetric binuclear CuII complex, with one CuII ion, one chloride ligand, one nitrate ligand, and two pyridine ligands in the asymmetric unit.

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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.

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The crystal structure of 4C2H5NH3+·I73–·I− comprises disordered ethyl­ammonium cations, an isolated disordered I− anion and a linear [I7]3– polyiodide anion. The crystal packing is consolidated by N—H⋯I inter­actions between cations and the anions.

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The cocrystal of the anti­cancer drug lenalidomide with 1,3-resorcinol crystallizes in the triclinic centrosymmetric P1 space group, with two mol­ecules of lenalidomide and one mol­ecule of 1,3-resorcinol present in the asymmetric unit. The crystal structure is primarily consolidated by a network of strong N—H⋯O hydrogen bonds involving the glutarimide moieties of the lenalidomide mol­ecule. In addition, O—H⋯O hydrogen bonds involving the hydroxyl groups of 1,3-resorcinol and the carbonyl oxygen atoms of the isoindolinone and glutarimide moieties of lenalidomide further contribute to the cohesion and organization of the crystal packing.

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The title cocrystal crystallizes in the monoclinic space group Pna21 with two mol­ecules of each component in the asymmetric unit. The structure contains π-stacked planar two-dimensional sheets with cooperative sp-C—H⋯N and sp2-C—H⋯N hydrogen bonds.