Synthesis, structural characterization and computational studies of catena-poly[chlorido­[μ₃-(pyridin-1-ium-3-yl)phospho­nato-κ³O:O′:O′′]zinc(II)]

A zinc(II) coordination polymer based on pyridin-3-yl­phospho­nic acid, displaying a three-dimensional supra­molecular channel network in the solid state, has been hydro­thermally synthesized and experimentally and theoretically characterized by single-crystal X-ray diffraction, vibrational spectroscopy and periodic DFT calculations.

A novel three-dimensional Sr^II coordination poly­mer based on benzene-1,2,4,5-tetra­carboxyl­ate: hydro­thermal synthesis, crystal structure and spectroscopic and thermal studies

The crystal structure of [Sr₂(BTEC)(H₂O)]_n (BTEC is benzene-1,2,4,5-tetra­carboxyl­ate) has been studied using X-ray diffraction, vibrational spectroscopy and thermal methods. The extended three-dimensional framework contains two-dimensional inorganic layers connected through organic linkers.

Selective synthesis of (3-ferrocenylprop-2-en-1-yl)tri­phenylphosphonium iodide: crystal structure determination of two polymorphs

The syntheses and structures of two polymorphs of (3-ferrocenylprop-2-en-1-yl)tri­phenyl­phospho­nium iodide are reported. A mol­ecular fit shows that the two cations can be nearly superimposed. The packing is controlled by C—H⋯π and C—H⋯I inter­actions, and in one polymorph by π–π stacking. The geometry within the ferrocenyl allyl fragment is compared with structures extracted from the Cambridge Structural Database.

Synthesis, crystal structures and luminescence properties of seven mononuclear zinc(II), cadmium(II), cobalt(II) and nickel(II) complexes with 5-(4-methyl­phenyl)-3-(pyridin-2-yl)-1H-1,2,4-triazole

Seven mononuclear transition metal complexes with different structural forms were prepared by the reaction of transition metal salts (Zn^II, Cd^II, Co^II and Ni^II) and 5-(4-methyl­phen­yl)-3-(pyridin-2-yl)-1H-1,2,4-triazole (pymphtzH), under either ambient or hydro­thermal conditions, and form three-dimensional supra­molecular structures through hydrogen bonds or π–π stacking inter­actions between the centroids of the pyridyl or arene rings. On the basis of X-ray structure analyses, the anionic ligands are found to play an important role in determining the structures and can influence the coordination geometry of the metal atoms and the N—M—N angles.

A new stepped tetra­nuclear copper(II) complex: synthesis, crystal structure and photoluminescence properties

A new stepped tetra­nuclear copper(II) complex has been synthesized and characterized using elemental analyses, UV and IR spectroscopy, single-crystal X-ray diffraction and a photoluminescence study. The two terminal Cu^II atoms are four-coordinated in square-planar environments, while the two central Cu^II atoms are five-coordinated in square-pyramidal environments.

Synthesis, crystal structure and study of the crystal packing in the complex bis­(4-amino­pyridine-κN¹)di­chlorido­cobalt(II)

A new cobalt(II) pyridine-based coordination compound showing π–π inter­actions with large horizontal displacements between the 4-amino­pyridine ligands and N—H⋯Cl and C—H⋯Cl hydrogen bonds is reported. The mol­ecular and supra­molecular structures have been studied in detail and compared with those of similar complexes found in a search of the Cambridge Structural Database. The supra­molecular structure was also investigated by Hirshfeld surface analysis.

Three isostructural solvates of a tetra­hydro­furochromenone derivative

The benzene, toluene and xylene solvates of a tetra­hydro­furochromenone are isostructural, having similar space groups and unit-cell parameters, and the positions of corresponding atoms are approximately the same and result in similar crystal packings.

Crystal structure and photoluminescence properties of a new monomeric copper(II) complex: bis­(3-{[(3-hy­droxy­prop­yl)imino]­meth­yl}-4-nitro­phenolato-κ³O,N,O′)copper(II)

In a new monomeric Cu^II complex with 3-{[(3-hy­droxy­prop­yl)imino]­meth­yl}-4-nitro­phenolate ligands, inter­molecular O—H⋯O hydrogen bonds link the mol­ecules to form a one-dimensional chain structure and π–π contacts also connect the mol­ecules to form a three-dimensional structure. The complex displays a strong green photoluminescence emission at 520 nm.

The dinuclear scandium(III) cyclo­octa­tetra­enyl chloride complex di-μ-chlorido-bis­[(η⁸-cyclo­octa­tetra­ene)(tetra­hydro­furan-κO)scandium(III)]

The X-ray structural characterization of a scandium(III) cyclo­octa­tetra­enyl chloride complex reveals its dinuclear structure with one terminal tetra­hydro­furan mol­ecule per metal atom. Direct comparison with the known lanthanide analogues (La, Ce, Pr, Nd, and Sm) illustrates the effect of metal-ion size on mol­ecular structure.

Two cadmium(II) fluorous coordination compounds tuned by different bi­pyridines

Two cadmium(II) fluorous coordination compounds with different bi­pyridine ligands, i.e. 2,2′-bi­pyridine and 4,4′-bi­pyridine, adopt different coordination modes (Cd—O or Cd—N coordination bonds) to form one-dimensional chains. The supra­molecular structures are constructed by π–π stacking, O—H⋯O hydrogen bonds and strong C—H⋯F—C inter­actions.