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June 2021 issue
metal-organic compounds
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The title compound forms a one-dimensional coordination polymer containing alternating six-coordinate Cd and four-coordinate Ni atoms, linked by bridging cyano ligands
CCDC reference: 2087407
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The cationic complex of the title compound contains an RhI atom with a pseudo-square planar coordination environment. It is ligated by an N-heterocyclic carbene, a triphenylphosphane, and a bidentate cylcooctadiene ligand. Charge balance is achieved from an out-sphere tetrafluoridoborate anion.
CCDC reference: 2088832
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The molecular structure of the title complex consists of an eight-membered Cu4C4 ring with an alternating arrangement of copper(I) atoms and μ-mesityl groups. Two of the copper(I) atoms are additionally linked to PMe3 ligands, giving a distorted trigonal coordination.
CCDC reference: 2088681
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In the title salt, all O—H and N—H groups in the cations (metforminium and ammonium) and lattice water molecules are donor groups for hydrogen bonds, giving a highly compact crystal structure.
CCDC reference: 2090930
organic compounds
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Crystal growth of 3′-carboxy-3-methyl-[1,4′-bipyridin]-1-ium chloride in ethanol led to single crystals of ethyl 4-oxo-1,4-dihydropyridine-3-carboxylic acid, which likely resulted from hydrolysis and esterification of the original compound, and its crystal structure was determined by single-crystal X-ray diffraction.
CCDC reference: 2086773
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The asymmetric unit of the title molecular salt contains two cations and two anions, which are linked by N—H⋯N hydrogen bonds in the extended structure.
CCDC reference: 2087276
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The asymmetric unit of the title solvated molecular salt consists of 1.5 cations, three bromide anions and one ethanol solvent molecule of crystallization. The half-cation is completed by crystallographic inversion symmetry. In the crystal, O—H⋯Br hydrogen bonds and weak C—H⋯Br interactions link the components.
CCDC reference: 2077383
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The structure of the neutralization product of 3-nitrobenzoic acid and pyridine is reported. A combination of hydrogen bonding and π–π interactions link the molecules, forming long-range order.
CCDC reference: 2088013
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The title compound is a monoclinic polymorph of the previously reported triclinic form. In the crystal, parallel offset π-stacking and ionic interactions consolidate the packing.
CCDC reference: 2085596
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In the title compound, the dihedral angle formed between the plane of the chromenone ring system (r.m.s. deviation = 0.031 Å) and the pendant benzene ring is 31.09 (5)°. In the crystal, weak C—H⋯O hydrogen bonds link the molecules into C(6) chains propagating along the a-axis direction.
CCDC reference: 2088523
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The title compound was prepared in three steps from p-xylene. Heterodimers between nearly identical molecules are connected via three hydrogen bonds from benzylic and ester methylene groups to phosphonate. The dimers form chains along the a-axis direction, stabilized by C—H⋯O bridges.
CCDC reference: 2091488
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In the structure of the diazadihydroacenaphthylene derivative reported here, stabilization is provided by C—H⋯N and C—H⋯π interactions.
CCDC reference: 2089097