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The Strandberg polyoxometalate (POM) metallogel Na4(H3O)2[(O2CC2H4PO3)2Mo5O15] (1) was synthesized in which the Strandberg cluster is functionalized by phosphonocarboxylate. The POM gel shows reversible sol to gel transition and gel to gel transition. The multiphase visual transitions between three states as a function of temperature and solvent are scarcely reported. The gel is characterized by temperature‐dependent and frequency‐dependent rheological studies and corresponding xerogels were characterized by FT‐IR, PXRD, FE‐SEM, EDX, TEM, and 31P NMR techniques. The stabilization of gel or obtaining single crystals from the same reaction mixture can be tuned by choice of counter cation. The single crystals of compound Cs14[(HO2CC2H4PO3)2Mo5O15]3·2Cl·10H2O (2) are obtained on addition of CsCl to compound 1 reaction mixture. Compound 2 is characterized by single crystal X‐ray diffraction. The compound 2 crystallizes in I2/a space group with unit cell parameters of a = 24.2415(16) Å, b = 10.4542(6) Å, c = 42.687(3) Å, α = 90°, β = 94.791°(3), and γ = 90°. [ABSTRACT FROM AUTHOR]

We report a novel series of chiral monometallic dithiocarbamate complexes with pendant phenolic groups, formulated as [M{κ2S^S-S2CN(CH2PhOH)(CH(S-CH3))(NaPh)}2] (M = Ni(II) S,S-1, Cu(II) S,S-2, Zn(II) S,S-3) and [M{κ2S^S-S2CN(CH2PhOH)(CH(R-CH3))(NaPh)}2] (M = Ni(II) R,R-4, Cu(II) R,R-5, Zn(II) R,R-6). These compounds were synthesized through a process involving chiral amino precursors S-HL1, R-HL2, CS2 and the corresponding metal acetates. All the compounds have been characterized by microanalysis and standard spectroscopic methods such as 1H and 13C{1H}NMR, IR, UV-visible absorption and EPR spectroscopy. The spectral data suggest a square planar coordination geometry around the nickel(II) and copper(II) centers and a tetrahedral coordination geometry around zinc(II), which is corroborated by density functional theory calculations. The unprecedented molecular structures of imine precursors S-I, R-I and Ni(II)-dithiocarbamate complex S,S-1 were elucidated by single crystal X-ray diffraction (SCXRD), and their crystal packing patterns were studied. Evidently, the change in chirality could not induce changes in the donor–acceptor sites of S-I and R-I, and their molecules are primarily stabilized by O–H⋯N and C–H⋯π interactions, forming a 2D sheet-like structure in the ab-plane. Notably, the chiral S,S-1 complex crystallized in a monomeric achiral space group (triclinic, P1) in which two dithiocarbamate ligands are bonded to the nickel(II) ion in a S^S chelating mode forming a square planar geometry around the metal center. The photophysical properties of all the compounds have been investigated using UV-visible absorption, emission, and thermogravimetric analyses. Compounds exhibited intense blue photoluminescence with maximum emissions in the 330–336 nm region upon excitation in the UV region. A molecular docking study was performed to validate the potentials of these compounds in protein–ligand interactions against B-DNA Dodecamer (PDB Id: 1BNA) and cyclins (PDB Id: 1w98), which are indeed essential proteins of the cell cycle, and their proper functioning is necessary for the human health. [ABSTRACT FROM AUTHOR]