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ISSN: 2414-3146

March 2019 issue

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Cover illustration: In Chlorido­bis­(ethane-1,2-di­amine)(4-fluoro­aniline)cobalt(III) dichloride monohydrate, the complex cation and the two counter-anions are linked via N-H...Cl, O-H...Cl and C-H...Cl hydrogen bonds, generating rings with R42(8), R21(6), R42(10) and R22(6) graph-set motifs. See: SubbiahPandi, AaminaNaaz, Mahalakshmi & Anbalagan [IUCrData (2019). 4, x190327].

metal-organic compounds

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The PtII atom in the title compound exhibits a distorted square-planar CClN2 coordination environment.

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The complex cation and the two counter-anions are linked via N—H⋯Cl, O—H⋯Cl and C—H⋯Cl hydrogen bonds, generating rings with R_{4}^{2}(8), R_{2}^{1}(6), R_{4}^{2}(10) and R_{2}^{2}(6) graph-set motifs.

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In the title compound, the Sn atom is coordinated to a 4,7-diphenyl-1,10-phenanthroline, two 3-bromo­benzyl and two bromide ligands, leading to a six-coordinate C2Br2N2 donor set with the bromo­benzyl ligands trans to each other and with the Br anions in a cis arrangement.

organic compounds

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In the mol­ecule of the title compound, pairwise C—H⋯F inter­actions link the mol­ecules into inversion dimers. Aromatic π–π inter­actions occur between rings of neighbouring pairs of mol­ecules related by inversion symmetry are also observed. Taken together, the weak inter­actions generate [010] chains.

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The 4H-pyran ring exhibits a shallow-boat conformation and the chloro­benzene ring occupies an axial position. In the crystal, inversion dimers linked by pairs of weak N—H⋯N hydrogen bonds generate R_{2}^{2}(12) loops and N—H⋯O hydrogen bonds link the dimers into [001] chains.
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