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ISSN: 2414-3146

August 2024 issue

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Cover illustration: Copper cyanide networks are of continuing inter­est because of the wide variety of different networks found and the inter­esting and potentially useful magnetic or photoluminescent properties shown by some of them. Poly[tris­(2-amino­butan-1-ol)copper(II) [hexa­kis-μ2-cyanido-κ12C:N-tetra­copper(I)] bis­(2-amino­butan-1-olato)aqua­copper(II) monohydrate] was obtained serendipitously during attempts to synthesize mixed-valence CuCN networks with the use of the base 2-amino-1-butanol. Instead of the expected structure type, with CN bridging CuI and CuII atoms, {[Cu(C4H11NO)3][Cu4(CN)6]·[Cu(C4H10NO)2(H2O)]·H2O}n, was obtained, which is made up of diperiodic anionic CuICN networks and two independent CuII complexes that are not covalently bonded to the networks. See: Corfield & Salvi [IUCrData (2024). 8, x240845].

metal-organic compounds


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There are two independent ion pairs in the asymmetric unit with each complex cation exhibiting a distorted square-planar conformation around the rhodium(I) atom.

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The title salt features a distorted cis-trigonal-bipyramid coordination geometry around the tin atom.

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The complex sits in a general position. Each NiII ion has an N4Cl2 coordination sphere. Weak hydrogen bonding exists between three of the amino groups and the chloride ions of an adjacent mol­ecule. Chains of mol­ecules, linked by the hydrogen bonding and short Cl⋯Cl contacts, are well separated by the 3-meth­oxy­aniline ligands.

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In the title compound, the 2-carb­oxy­quinolinium cation, the [SnCl6]2– anion (site symmetry [\overline{1}]) and the water mol­ecule of crystallization are held together by hydrogen bonds, π–π stacking and C—Cl⋯π inter­actions.

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The title structure is made up of diperiodic anionic CuICN networks and two independent CuII complexes that are not covalently bonded to the networks.

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The title compound is a dimeric nickel(II) coordination compound containing two different substituted pyrazoles ligands, namely 3,5-di­methyl­pyrazole and 3-(pyridin-2-yl) pyrazole along with acetate.

organic compounds


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The mol­ecules of the title compound form acid–acid homodimers in the crystal structure.

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The title compound crystallizes with two mol­ecules in the asymmetric unit. In the crystal, the two mol­ecules associate to form an acid–acid dimer by pairwise O—H⋯O hydrogen bonds.

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The title compound is a morpholinium derivative with the positive charge located on the N atom.

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The crystal structure of a new S-methyl-substituted di­thio­carbazate imine containing the 5-bromo­isatin moiety is described.

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In the crystal, classical N—H⋯O hydrogen bonds as well as C—H⋯O contacts connect the cationic and anionic entities into sheets lying parallel to the ab plane.

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The components of the title mol­ecular salt are linked by N—H⋯O hydrogen bonds and aromatic π–π stacking inter­actions.
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