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February 2022 issue
metal-organic compounds
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The reaction of AgNO3 with the ligand 2,2′,2′′,2′′′-{[pyrazine-2,3,5,6-tetrayltetrakis(methylene)]tetrakis(sulfanediyl)}tetraacetic acid, in the presence of a potassium acetate buffer, lead to the formation of a silver(I)–potassium–organic framework.
CCDC reference: 2143798
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The title compound exhibits typical PtIV—S bond lengths. The packing of the complexes enable intermolecular interactions between the qdt ligands (qdt = quinoxaline-2,3-dithiolate) and an amine hydrogen atom (hydrogen bonding) or other qdt ligands (π–π stacking).
CCDC reference: 2145270
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Bis[1,2-bis(4-chlorophenyl)ethylene-1,2-dithiolato(1−)]nickel(II) crystallizes as pairs of molecules related by an inversion center with close intermolecular C—H⋯S and C—H⋯Ni contacts.
CCDC reference: 2150616
organic compounds
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In the crystal, the molecules are linked by O—H⋯O and N—H⋯O hydrogen bonds into a three-dimensional network.
CCDC reference: 2149479
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The asymmetric unit of the title compound contains two almost identical molecules, which have approximate D2 symmetry. They show a largely twisted double bond, the molecular halves enclosing dihedral angles of 62.86 (4) and 61.22 (3)°.
CCDC reference: 2151512
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The components of the title molecular salt are linked by N—H⋯O and O—H⋯O hydrogen bonds.
CCDC reference: 1810894
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The packing of the title compound is consolidated by C—H⋯O interactions.
CCDC reference: 2153368
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This new triazole-functionalized phosphonic acid, PTEPHCl, was synthesized by the `click' reaction of the alkyl azide diethyl-(2-azidoethyl)phosphonate with phenylacetylene to give the diethyl[2-(4-phenyl-1H-1,2,3-triazol-1-yl)ethyl]phosphonate ester, which was then hydrolyzed under acidic conditions (HCl) to give the `free' phosphonic acid. The use of HCl for the hydrolysis caused protonation of the triazole ring, rendering the compound cationic, charged-balanced by a Cl− anion.
CCDC reference: 2145106
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The title compound is more planar than its 3-nitro isomer in the solid state and differs in its hydrogen-bonding pattern.
CCDC reference: 2153454