Crystallographic study of the energetic salt 1,2,4-triazolium perchlorate

The structure of an energetic com­pound is reported whose detailed crystallographic data were not available previously. The structure was determined using X-ray diffraction on monocrystals synthesized by electronic oxidation. The results are additional confirmation that protonation of the 1,2,4-triazole ring results in similar trends with regard to bond angles.

The α-D-anomer of 2′-de­oxy­cyti­dine: crystal structure, nucleo­side conformation and Hirshfeld surface analysis

α-2′-De­oxy­cyti­dine is the α-anomeric analogue of the canonical β-2′-de­oxy­cyti­dine and adopts conformational parameters which lie outside the conformational range usually preferred by α-nucleo­sides. Crystal packing is controlled by N—H⋯O and O—H⋯O contacts between the nucleobase and sugar moieties.

Structural diversity among some di­alkyl­tin(IV) benzoate and related derivatives

The mol­ecular structures of five diorganotin(IV) carboxyl­ates show two of the typically observed motifs: discrete mononuclear com­plex mol­ecules with skew-trapezoidal bipyramidally coordinated Sn^IV atoms and discrete tetra­nuclear mol­ecules with Sn₄O₂ cores surrounded by four bridging carboxyl­ate ligands, plus two alkyl ligands at each Sn^IV centre. This diversity may be influenced by the stoichiometric ratio of com­ponents in the synthesis.

Three coordination polymers built by quaternary-ammonium-modified isophthalic acid

Three metal–organic frameworks constructed by quaternary-ammonium-modified isophthalic acid are reported.

Structural and enhanced hydrogen storage properties of the Li₁₂Mg₃Si₃Al phase

The multicomponent alumosilicide Li₁₂Mg₃Si₃Al belongs to the structural family based on the Cu₁₅Si₄ type. The reversible hydrogen storage capacity is excellent and the gravimetric storage capacity of this new material is higher compared to Li₁₂Mg₃Si₄. The enthalpy of hydrogen desorption is lower compared to known lithium-based hydrides.

New red phosphor Na₃EuB₈O₁₅ with an open-window tubular structure

A new polyborate, Na₃EuB₈O₁₅, with a bright-red emission under near-UV light excitation due to the 4f→4f transition of the Eu³⁺ ion, was prepared using the high-temperature molten-salt method and structurally characterized by single-crystal X-ray diffraction analysis.

Transition-metal complexes of group 12 with 1,1′-bis­(phosphan­yl)ferrocene ligands

New cadmium and zinc complexes based on 1,1′-bis­(phosphan­yl)ferrocene ligands and their phosphine chalcogenide derivatives have been prepared and characterized by X-ray crystallography.

Synthesis, structure and computational study of 5-[(prop-2-en-1-yl)sulfan­yl]-1,3,4-thia­diazol-2-amine (Pesta) and its heterometallic π,σ-com­plex [Cu₂FeCl₂(Pesta)₄][FeCl₄]

A novel heterometallic Cu^I–Fe^II π,σ-com­plex based on an allyl-substituted 1,3,4-thia­diazole ligand has been prepared using the alternating-current electrochemical technique and its structure studied. Agglomeration of [Cu₂FeCl₂(Pesta)₄]²⁺ subunits {Pesta is 5-[(prop-2-en-1-yl)sulfan­yl]-1,3,4-thia­diazol-2-amine} into an infinite chain is prevented by π-coordination of the allylic C=C bond to the Cu^I ion. An energy framework computational analysis was also performed for Pesta.