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A samarium hybrid with porphyrin and amino acid as mixed ligands {[Sm(His)(H2O)][Sm(H3O)3](H2TPPS)2} • 5H2O (1) (His = histidine; H6TPPS = tetra(4-sulfonatophenyl)porphyrin) has been synthesized via a hydrothermal reaction and characterized by single-crystal X-ray diffraction. Compound 1is crystallized in the space group [Formula: see text] of the triclinic system. Compound 1is characteristic of a three-dimensional (3-D) open framework with the samarium ions in two types of coordinating environments and a saddle-distorted nonplanar porphyrin macrocycle. Compound 1 exhibits fluorescence in the red region. The fluorescence lifetime of 1 is 15.65 ns and the emission quantum yield is 4.1%. The CV/DPV, UV-vis and FT-IR are also reported in detail.

The compound [Hg3S2CI2] has been obtained by solid-state reactions. It crystallises in the acentric space group R3 of the rhombohedral system with six formula units in a cell [ a = b = 12.654(3), c = 7.753(4) Å, V = 1075.1(6) Å3, CI2Hg3S2, M r = 736.79, D c = 6.828 g cm−3, S = 0.987, μ(Mo Kα) = 65.308 mm−1, F(000) = 1836, R = 0.0631 and wR = 0.1443] and is characterised by a 3-D framework structure, which is composed of interconnected right-handed helices formed by tetrahedral Hg atoms. Optical absorption spectra reveal the presence of an optical bandgap of 2.51 eV and the composition Hg3S2CI2 is confirmed by semiquantitative microscope analysis.