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Journal logoIUCrDATA
ISSN: 2414-3146

May 2020 issue

Highlighted illustration

Cover illustration: The mol­ecular structure of [1,2-bis(diiso­propyl­phosphan­yl)ethane-[kappa]2P,P'](2-fluoro-N-{[(2-fluoro­phen­yl)aza­nid­yl]carbon­yl}anilinido-[kappa]2N,N')nickel(II) comprises an NiII atom with a distorted square-planar coordination environment (geometry index [tau]4 = 0.195). The crystal structure displays C-H...O and C-H...F hydrogen-bonding inter­actions, leading to chains with R22(12) motifs extending parallel to [100]. This compound might be of inter­est with respect to the production of urea and carbamate derivatives of nickel(II). See: Flores-Alamo, Perez-Ortiz, Arevalo & Garcia [IUCrData (2020). 5, x200649].

metal-organic compounds

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A divalent copper two-dimensional coordination polymer, {[Cu(H2O)(diphenate)(bis­(4-pyrid­yl)urea)]·1.25H2O}n, was structurally characterized by single-crystal X-ray diffraction.

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The crystal structure of di­ammonium potassium citrate has been solved and refined using laboratory X-ray powder diffraction data and optimized using density functional theory techniques.

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The crystal structure of the title compound is consolidated by N—H⋯Cl and C—H⋯Cl hydrogen bonding inter­actions.

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The NiII atom in the title compound shows a distorted square-planar P2N2 coordination set provided by two bidentate ligands.

organic compounds

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The title compound has a nearly planar geometry. In the crystal, the mol­ecules are assembled into chains parallel to the [\overline{1}11] direction by O—H⋯O and C—H⋯O hydrogen bonds

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The title compound crystallizes in an ortho­rhom­bic unit cell with a single cation–anion pair in the asymmetric unit. Hydrogen bonding appears to be the dominant inter­molecular force between the individual ions, forming extended networks.

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In the title mol­ecular salt, N–H⋯O and N–H⋯(O,O) hydrogen bonds connect the components into a three-dimensional network.

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The title compound exists with one protonated imidazolium ring, one neutral imidazole ring, and a benzene­sulfonate anion in the asymmetric unit. The imidazole rings are held together through hydrogen bonding via a protonated nitro­gen on the ring.

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In the title compound, the pyrrolidine ring fused to the imidazole ring has an envelope conformation.

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Pairs of mol­ecules related by inversion symmetry are linked by inter­molecular C—H⋯F contacts with R(8)22 geometry.

addenda and errata

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