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ISSN: 2414-3146

December 2022 issue

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Cover illustration: Silver is oligodynamic as a result of its excellent anti­microbial, anti­bacterial and anti­cancer properties. Continuous development of phosphine silver(I) complexes has resulted in this class of compounds being evaluated against numerous cancer cell lines. In this context, the phosphine silver(I) complex with nitrite as a co-ligand, nitrito-κ2O,O′)bis­[tris­(4-methyl­phen­yl)phosphane-κP]silver(I), is reported. The mol­ecular structure exhibits a pseudo-tetra­hedral coordination around the central AgI atom. The compound crystallizes with one mol­ecule in the asymmetric unit in the monoclinic space group P21/n with a rather long b axis [33.8752 (2) Å]. Weak C—H⋯O and C—H⋯N inter­actions consolidate the crystal packing. The nitrite-O atoms each occupy a single position in the coordination geometry. See: Malan, Potgieter & Meijboom [IUCrData (2022). 7, x221148].

metal-organic compounds

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In the crystal structure of the title compound, the palladium(II) metal center is surrounded by a bidentate 2,2′-bi­pyridine ligand and two aceto­nitrile mol­ecules in a distorted square-planar geometry.

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In the crystal structure of the title compound, the central zinc(II) atom is surrounded by a bidentate 4,4′-dimethyl-2,2′-bi­pyridine ligand and two coordinating chlorides in a distorted tetra­hedral shape with π–π stacking inter­actions contributing to the crystal packing.

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The central AgI atom exhibits a distorted tetra­hedral coordination environment, defined by three P atoms of three benzyl-di­phenyl­phosphane ligands and one O atom of a nitrato ligand.

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The synthesis and single-crystal structure are described of a μ-NO2 silver(I) tris-p-tolyl­phosphine complex to be applied as an potential anti­cancer agent.

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In the title compound, the exocyclic penta­fulvene carbon atom coordinates in a staggered conformation relative to the η1-ligands.

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The title complex exhibits a distorted octa­hedral coordination geometry. The CuN6 coordination sphere is composed of bidentate 2,2′-dipyrid­yl)amine in the equatorial sites while the axial sites are occupied by 1,1,3,3-tetra­cyano-2-eth­oxy­propenide ligands. In the crystal, N—H⋯N hydrogen bonding results in chains parallel to [010].

organic compounds

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In the title salt, the bromide ions accept N—H⋯Br hydrogen bonds from the cations, generating C(8) chains propagating in the b-axis direction.
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