Tb₃Pd₂, Er₃Pd₂ and Er₆Co_5–x: structural variations and bonding in rare-earth-richer binary inter­metallics

Fused tricapped {TR₆} trigonal prisms (R = rare-earth metal and T = transition metal) are the structural building units in binary rare-earth–transition-metal inter­metallics, in dimers in R₃Pd₂ and in tetra­mers in Er₆Co_5–x.

Supra­molecular structures of rhenium(I) complexes mediated by ligand planarity via the inter­play of substituents

The fluoro and nitro substituents on the phenyl ring of the 1-(4-fluoro­cinnamo­yl)-3-(pyridin-2-yl)pyrazole ligand influence the planarity, inter­actions and also the mol­ecular packing of its rhenium(I) complexes.

Design of two series of 1:1 cocrystals involving 4-amino-5-chloro-2,6-di­methyl­pyrimidine and carb­oxy­lic acids

Two series of a total of ten cocrystals involving 4-amino-5-chloro-2,6-di­methyl­pyrimidine with various carb­oxy­lic acids have been prepared and characterized by single-crystal X-ray diffraction.

Thermal stability of the layered modification of Cu_0.5ZrTe₂ in the temperature range 25–900 °C

The thermal stability of the layered modification of the polycrystalline compound Cu_0.5ZrTe₂, synthesized at room temperature, has been studied in the temperature range 25–900 °C. In-situ time-resolved synchrotron X-ray diffraction experiments showed that the crystal structure is ruled by the copper occupation of the octa­hedral and tetra­hedral sites in the ZrTe₂ inter­layer space.

Composite host lattices of 4,4′-sulfonyl­dibenzoate water/boric acid in two tetra­propyl­ammonium inclusion compounds

In two inclusion compounds of 4,4′-sulfonyl­dibenzoate and tetra­propyl­ammonium with various small ancillary mol­ecules, an isolated hydrogen-bonded tetra­mer is constructed in one and a ribbon is constructed in the other. Although the host anion and guest cation are the same, the difference in the ancillary small mol­ecules results in different structures, indicating the significance of ancillary mol­ecules in the formation of crystal structures.

A thermally stable three-dimensional cobalt(II) coordination polymer based on the V-shaped ligand 4-(4-carb­oxy­phen­oxy)isophthalate

A hydro­thermally stable three-dimensional cobalt(II) metal–organic framework, with a (3,6)-connected topological network, was assembled from 4-(4-carb­oxy­phen­oxy)isophthalic acid. The thermal stability and magnetic properties of this coordination polymer were investigated.

Models for potential dendritic nitric oxide donors: crystal structures of two 2-nitro­anilino precursors and nitric oxide-release behavior of the nitro­sated derivatives

Two nitro­phenyl-substituted secondary amines have been synthesized and characterized by single-crystal X-ray diffraction, ¹H NMR, IR and mass spectrometry. Following nitro­sation of the amine groups via reaction with NaNO₂, NO release was measured for each compound over time and the results gauged against the number of NO-donor sites.

Novel tantalum phosphate Na₁₃Sr₂Ta₂(PO₄)₉: synthesis, crystal structure, DFT calculations and Dy³⁺-activated fluorescence performance

A novel tantalum phosphate, Na₁₃Sr₂Ta₂(PO₄)₉, containing isolated [Ta₂(PO₄)₉] units, can emit intense off-white light after doping with Dy³⁺ ions.

Construction and photoluminescence properties of a three-dimensional Zn^II coordination network based on naphthalene-1,4-dicarb­oxy­lic acid and 1,6-bis­(pyridin-3-yl)-1,3,5-hexa­triene

Hydro­thermal reaction between Zn(NO₃)₂·6H₂O, naphthalene-1,4-di­carb­oxy­lic acid and 1,6-bis­(pyridin-3-yl)-1,3,5-hexa­triene afforded a three-dimensional Zn^II coordination network which can be simplified as a unique 6-connected framework with the point symbol 4⁴6¹⁰8.

Theoretical insight into the disordered structure of (Z)-2-[(E)-(4-meth­oxy­benzyl­idene)hydrazinyl­idene]-1,2-di­phenyl­ethanone: the role of noncovalent inter­actions

Both ordered and disordered crystal structures were found at ambient temperature for (Z)-2-[(E)-(4-meth­oxy­benzyl­idene)hydrazinyl­idene]-1,2-di­phenyl­ethanone. In the disordered structure, the two disorder components are related by a glide movement of the whole mol­ecule by about 1.3 Å. All noncovalent inter­actions (NCIs) have been analyzed experimentally and theoretically.