Thermally and Photoinduced Spin-Crossover Behavior in Iron(II)-Silver(I) Cyanido-Bridged Coordination Polymers Bearing Acetylpyridine Ligands.

We report two new cyanido-bridged Fe(II)-Ag(I) coordination polymers using different acetylpyridine isomers, {Fe(4acpy)[Ag(CN)]} and {Fe(3acpy)[Ag(CN)]} (4acpy = 4-acetylpyridine; 3acpy = 3-acetylpyridine) displaying thermally and photoinduced spin crossover (SCO). In both cases, the acetylpyridine ligand directs the coordination polymer structure and the SCO of the materials. Using 4-acetylpyridine, a two-dimensional (2D) structure is observed in made of layers stacked on each other by silver-ketone interactions leading to a complete SCO and reversible thermally and photoswitching of the magnetic and optical properties.

[(CH)NH]PdBr, a layered hybrid halide perovskite semiconductor with improved optical and electrical properties.

Inspired by the success of three-dimensional hybrid perovskites (CHNH)PbX (X = Cl, Br, I), two-dimensional (2D) organic-inorganic hybrid metal halides have drawn immense attention due to their highly tunable physical properties. Moreover, although 3D hybrid perovskite materials have been reported, the development of new organic-inorganic hybrid semiconductors is still an area in urgent need of investigation. Here, we used the dimethylammonium cation to construct a palladium-based halide perovskite material [(CH)NH]PdBr with a 2D layered structure.

Supramolecular Frameworks Based on Rhenium Clusters Using the Synthons Approach.

The reaction of the K[{ReS}(OH)]·8HO rhenium cluster salt with pyrazine (Pz) in aqueous solutions of alkaline or alkaline earth salts at 4 °C or at room temperature leads to apical ligand exchange and to the formation of five new compounds: [{ReS}(Pz)(OH)(HO)] (), [{ReS}(Pz)(OH)(HO)] (), (NO)[{ReS}(Pz)(OH)(HO)](Pz)·3HO (), [Mg(HO)][{ReS}(Pz)(OH)(HO)]·8.5HO (), and K[-{ReS}(Pz)(OH)(HO)]·8HO (). Their crystal structures are built up from - or -[{ReS}(Pz)(OH)(HO)] cluster units.

Physical properties of new ordered bimetallic phases MCdPS (M = Zn, Ni, Co, Mn).

Four bimetallic phases of the thiophosphate family have been synthesized by the cationic exchange reaction using a freshly prepared K0.5Cd0.75PS3 precursor phase and methanolic solutions of nitrates of the divalent cations ZnII, NiII, CoII, and MnII.

Retraction: Ni[LnCl] (Ln = Eu, Ce, Gd): the first Ln compounds stabilized in a pure inorganic lattice.

Retraction of 'Ni2[LnCl6] (Ln = EuII, CeII, GdII): the first LnII compounds stabilized in a pure inorganic lattice' by Bianca Baldo et al., Chem. Commun.