Synthesis, crystal structure, spectroscopic study and Hirshfeld surface analysis of [Ni(C6H8N2)3]Cl2.2(H2O) (1)

The synthesis and crystal structures of two μ-oxo iron(III) porphyrin complexes

Two [Formula: see text]-oxo iron(III) porphyrin complexes, [Formula: see text]-oxo-bis[meso-tetra-[Formula: see text],[Formula: see text],[Formula: see text],[Formula: see text]-([Formula: see text]-nicotina-midophenyl)porphinatoiron(III)] ([Fe(TPyPP)]2O) and its copper adduct ([Fe(TPyPP)(CuCl)]2O[CF3SO3][Formula: see text], which are derived from Gunter’s porphyrin model for cytochrome [Formula: see text]oxidase are reported. The two complexes were isolated and characterized by single crystal X-ray diffraction, UV-vis and IR spectroscopies. Crystal structural analysis including comparisons to [Formula: see text]-oxo analogues and Hirshfeld surface calculations revealed several noteworthy structural features [Formula: see text] the various picket orientations which are partially attributed to intra- and/or inter-molecular nonbonded interactions.

A lead-free layered Dion–Jacobson hybrid double perovskite constructed by an aromatic diammonium cation

A two-dimensional Dion–Jacobson type lead-free hybrid double perovskite [(3AMPY)₂AgBiI₈·H₂O] (3AMPY = 3-(aminomethyl) pyridinium) constructed by an aromatic diammonium cation exhibits an attractive narrow band gap (E_g = 1.86 eV).