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In recent years, organic–inorganic hybrid metal halides have emerged as a highly promising class of semiconducting light emitting diodes (LEDs) due to their fascinating photoluminescence properties. Here, by specifically selecting different organic cations as templates, a series of new hybrid cuprous halides have been solvothermally prepared, namely [Me-Py]CuI2 (1), [(Me)2-DABCO]Cu2I4 (2), [Me-MePy]Cu2I3 (3), and [H2DABCO]Cu3X5 (X = I (4) and Br (5)). These hybrid cuprous halides feature one-dimensional (1D) [CuI2]−, [Cu2I3]− and [Cu3X5]2− (X = Br, I) chains surrounded and charge-balanced by organic cations. Under UV photoexcitation, these hybrid cuprous halides exhibit strong tunable photoluminescence from cyan (480 nm) to red (675 nm) emissions with large Stokes shifts (345 nm). The intrinsic nature of PL emissions is also investigated based on temperature-dependent PL emission, lifetime, photoluminescence quantum efficiencies, etc. [ABSTRACT FROM AUTHOR]

Four novel manganese phosphonate clusters, namely Cl@[Mn6(t-BuPO3)8(H2O)2(CH3OH)4][OH] (1), Br@[Mn6(t-BuPO3)8(H2O)2(CH3OH)4][OH]·4H2O (2), [Mn13O6(t-BuPO3)10(OH)6(CH3OH)6][Mn13O6(t-BuPO3)10(OCH3)6(t-BuPO3H2)2(H2O)4]·2CH3OH·10H2O (3) and [Mn15K2O8(t-BuPO3)10(CH3O)4(C6H5COO)4(H2O)8]·6H2O (4), have been successfully synthesized in the presence of tert-butylphosphonic acid, carboxylic acid, NBun4MnO4 and different manganese sources. These clusters were characterized by elemental analyses, IR spectroscopy, thermogravimetric (TG) analyses and single-crystal X-ray diffraction. Single-crystal structure analyses reveal that the structures of 1–4 are diverse. The structure of cluster 1 is analogous to that of cluster 2, which displays a cage-like arrangement with one halide ion (Cl−, Br−) lying inside the centre of the cave. Cluster 3 is a carboxylate-free manganese phosphonate cluster consisting of two similar Mn13 structural units. Moreover, there exist two potassium ions and fifteen manganese ions in the heterometallic cluster 4. In addition, solid-state DC magnetic susceptibility measurements indicate the existence of overall antiferromagnetic (AF) exchange interactions between the Mn ions in all clusters. [ABSTRACT FROM AUTHOR]