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ISSN: 2414-3146

September 2019 issue

Early view articles

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metal-organic compounds


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The centrosymmetric mol­ecule of the title compound can be regarded as a dimer, consisting of two pairs of copper(II) cations arranged in a triangle and bridged by pyrazolate, carboxyl­ate groups and hydroxido ligands.

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The title coordination polymer was obtained reacting zinc(II) acetate with a tetra­phospho­nate cavitand in DMF. The basic conditions of the reaction medium hydrolysed the cavitand making the phospho­nate group available for coordination to the zinc(II) cation.

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The structure of a salt consisting of a tetra­iso­thio­cyanato­cobalt(II) complex anion, a water-bonded postassium cation and a D-(+)-glucosa­mmonium cation was refined by single-crystal X-ray diffraction analysis in the P212121 space group.

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The title compound consists of two quinolinium cations and an MnBr4 anion, which exhibits a distorted tetra­hedral coordination geometry.

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The cadmium cations (coordination number seven) are linked by hy­droxy­propano­ate anions into a three-dimensional network.

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The penta­carbonyl molybdate complex [Cs([2.2.2]crypt)]2[Mo(CO)5] was obtained by the reduction of Mo(CO)35-Cp)H with Cs5Bi4 in the presence of [2.2.2]crypt in liquid ammonia and contains an approximate trigonal–bipyramidal [Mo(CO)5]2− anion.

organic compounds


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The synthesis of the title sulfanilamide derivative and the determination of its crystal structure are reported.

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In the cation of the title mol­ecular salt, C15H19N2+·PF6, the dihedral angle between the benzene and pyridine rings is 38.21 (10)°.

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The asymmetric unit of the title compound contains two independent mol­ecules, A and B, with similar geometries. In the crystal, the A mol­ecules form [1\overline{1}0] chains linked by O—H⋯O hydrogen bonds from the hydroxyl group to one of the meth­oxy O atoms. The B mol­ecules form O—H⋯O hydrogen bonds to the hydroxyl O atoms of the A mol­ecules and thus act as fixed spacers between the chains of mol­ecule A.

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The title structure, a putative metabolite of 3,5-di­chloro­biphenyl (PCB 14), the dihedral angle between the two benzene rings of the title compounds is 58.86 (4)°.

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Very weak C—H⋯N and C—H⋯O inter­actions occur in the crystal structure of the title compound.

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Crystallization from a commercial source of 3-ethyl-4-methyl-3-pyrrolin-2-one afforded 1:1 co-crystals of this compound (C7H11NO) with its oxidized derivative, 3-ethyl-4-methyl-3-pyrrolin-2,5-dione (C7H9NO2).
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