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October 2019 issue
research communications
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The title chiral β-amino alcohol was isolated as one of two diastereomeric β-amino alcohols, the title molecule being found to be the (S,R) diastereoisomer. In the crystal, molecules are packed in a herringbone manner parallel to (103) and (10) via weak C—H⋯O and C—H⋯π(ring) interactions.
CCDC reference: 1950166
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The structures and Hirshfeld surface analyses of the title compounds are reported.
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The title compound consists of a 1,2-dihydroquinoline-4-carboxylate unit with 2-chloroethyl and propynyl substituents, where the quinoline moiety is almost planar and the propynyl substituent is nearly perpendicular to its mean plane. In the crystal, the molecules form zigzag stacks along the a-axis direction through slightly offset π-stacking interactions between inversion-related quinoline moieties, which are tied together by intermolecular C—HPrpnyl⋯OCarbx and C—HChlethy⋯OCarbx (Prpnyl = propynyl, Carbx = carboxylate and Chlethy = chloroethyl) hydrogen bonds.
CCDC reference: 1951439
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The title compound has a non-coplanar accumulated aromatic rings structure. In the molecule, the two carbonyl groups are oriented in the same direction with respect to the naphthalene ring system and are situated roughly parallel to each other, whereas the two 2,4,6-trichlorobenzene rings are orientated in opposite directions with respect to the naphthalene ring system.
CCDC reference: 1950725
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An E configuration about each of the two imine bonds is found in the title molecule which, to a first approximation, is planar. The main feature of the molecular packing is π–π stacking leading to helical, supramolecular chains.
CCDC reference: 1857868
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In the title compound, C27H29BrN2, an intramolecular N—H⋯N hydrogen bond forms an S(6) ring motif. In the crystal, two molecules are associated into an inversion dimer via a pair of C—H⋯π interactions. The dimers are linked by another pair of C—H⋯π interactions, forming a ribbon along the c-axis direction.
CCDC reference: 1951647
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The synthesis and crystal structure of a coordination polymer composed of β-diketonato zinc(II) [Zn(dbm)2] and triarylamine-based bridging ligands (T3PyA) is reported. The asymmetric unit in the crystal consists of two independent halves of Zn(dbm)2, one T3PyA and one solvate THF. Each ZnII atom is located on an inversion centre and adopts an elongated octahedral coordination geometry. In the crystal, the coordination polymer chains are linked via C—H⋯π interactions into a three-dimensional framework.
CCDC reference: 1951564
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The crystal structures of four 3,5-diacetyl-2-methyl-2,3-dihydro-1,3,4-thiadiazol-2-yl derivatives, viz. 4-phenyl benzoate, 4-phenyl isobutyrate, 4-phenyl propionate and 4-phenyl cinnamate, are described and the intermolecular contacts in the crystals are analysed using Hirshfeld surface analysis and two-dimensional fingerprint plots.
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The molecular and crystal structure of the salt 3-methacrylamido-N,N,N-trimethylpropan-1-aminium 2-acrylamido-2-methylpropane-1-sulfonate, that crystallizes with two unique pairs of cations and anions in the asymmetric unit, is reported. Hirshfeld surface analysis of the asymmetric unit and of the two individual salts is also carried out.
CCDC reference: 1950279
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The title compound was isolated serendipitously as the co-crystal of 2,4-dichlorophenol and 2,4-dichloro-6-{[(3-hydroxypropyl)azaniumyl]methyl}phenolate in its zwitterionic form, from an incomplete Mannich condensation. The co-crystal is held together by extensive intra- and intermolecular hydrogen bonds as well as π–π interactions.
CCDC reference: 1952329
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The change of substituents viz. a chlorine atom in (I) replaced by a methyl group in (II) has not induced any differences in their respective crystal packing features, confirming the validity of the chlorine–methyl exchange rule.
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The synthesis and crystal structure of the title 2-(1H-benzimidazol-2-yl)aniline CdII complex is reported in which the CdII atom lies on a twofold rotation axis and is coordinated by four N atoms, provided by two bidentate 2-(1H-benzimidazol-2-yl)aniline ligands, and two nitrato O atoms, forming a distorted octahedral geometry.
CCDC reference: 1951821
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In the title compound, the mean plane of the central pyrazole ring [r.m.s. deviation = 0.095 Å] makes dihedral angles of 11.93 (9) and 84.53 (8)°, respectively, with the phenyl and benzene rings. In the crystal, pairs of N—H⋯O hydrogen bonds link inversion-related molecules into dimers, generating an (8) ring motif.
CCDC reference: 1934997
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The title tri-substituted thiourea derivative is twisted with a dihedral angle of 72.12 (9)° between the planes through the CN2S atoms and the 4-tolyl ring; an intramolecular N–H⋯O hydrogen bond leads to an S(7) loop. In the crystal. hydroxyl-O—H⋯O(hydroxyl) and hydroxyl-O—H⋯S(thione) hydrogen bonds give rise to a supramolecular layer in the ab plane.
CCDC reference: 1919878
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The tin coordination geometry in (C6H5)3Sn[S2CN(i-Pr)2] is based on a tetrahedron but the geometry of the C3S donor set is distorted by the close proximity of the second thione-S atom. In the crystal, weak C—H⋯C interactions link molecules into centrosymmetric dimers.
CCDC reference: 1952056
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The title complex consists of a PtII atom coordinated in a square-planar environment by a dimethyl sulfoxide molecule and a thiosemicarbazone ligand. The overall conformation of the title complex is discussed and compared with related ligands. In the crystal, molecules are assembled via hydrogen bonds and C–H⋯π interactions forming a two-dimensional network.
CCDC reference: 1524712
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BaCu2.6Zn2.4 has an α-SrZn5-type structure. Although the Ba atom is larger than the Sr atom, the cell volume of title compound is smaller than that of α-SrZn5. This can be attributed to the partial substitution of Cu atoms with Zn atoms, and the average Ba—Zn/Cu distance becomes shorter than the Sr—Zn distance.
CCDC reference: 1952238
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In twelve 4-(4-methoxyphenyl)piperazin-1-ium salts containing organic anions, the hydrogen-bonded supramolecular assembly ranges from simple chains via chains of rings and sheets to three-dimensional framework structures.
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The title compound is a salt formed by a hydrazinium (1+) cation and a hexafluoridosilicate anion interconnected by N—H⋯N and N—H⋯F hydrogen bonds.
CCDC reference: 1953037
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The title 2,3′-bipyridine-based quaterpyridine derivative has a linear geometry. The pyridine rings are tilted slightly with respect to each other. In the crystal, π–π stacking and weak C—H⋯π interactions lead to formation of a two-dimensional layer structure.
CCDC reference: 1953451
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The title N-(pyridin-2-ylmethyl)benzamide derivative, crystallizes with two independent molecules (A and B) in the asymmetric unit, which differ essentially in the orientation of the pyridine ring with respect to the benzene ring, with the two rings being inclined to each other by 53.3 (2) and 72.9 (2)° in molecules A and B, respectively.
CCDC reference: 1954107
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The crystal structures of the title spiro derivatives are described and the analysis of the intermolecular contacts in the crystals using Hirshfeld surface analysis and two-dimensional fingerprint plots is reported.
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The syntheses and crystal structures of three cyclotriphosphazenes, all with fluorinated aryloxy side groups that generate different steric characteristics are reported.
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In the title compound, there are two intramolecular N—H⋯O and N—H⋯N hydrogen bonds, forming S(5) and S(7) ring motifs, respectively. In the crystal, pairs of C—H⋯O hydrogen bonds link molecules into inversion dimers with (14) ring motifs, stacked along the b-axis direction. The inversion dimers are linked by C—H⋯π and π–π-stacking interactions, forming a three-dimensional network.
CCDC reference: 1954699
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In the title polymeric complex, the tetracyanoplatinate anions bridge the FeII cations to form infinite two-dimensional layers that propagate along the bc plane. Two guest molecules of acetone per FeII are located between the layers. These guest acetone molecules interact with the coordinated water molecules by O—H⋯O hydrogen bonds.
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In the title hybrid organic–inorganic compound, the (CH3)2NH2+ cations interact with the zinc–phosphonate framework via N—H⋯O hydrogen bonds. The (CH3)2NH2+ cations were formed by the in situ decarbonylation of the N,N-dimethylformamide (DMF) solvent.
CCDC reference: 1954737
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In the crystal of the title salt, the cations and anions are linked via N—H⋯Br hydrogen bonds to form a three-dimensional network.
CCDC reference: 1955268
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The title high-spin iron(II) complex is six-coordinated with two trifluoromethanesulfonato and four tetrahydrofuran ligands. It is isostructural with the corresponding Co, Ni and Zn complexes known from the literature.
CCDC reference: 1955192
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The structures of the two isomeric hydrogen-bonded 1:1 co-crystals of 3-chloro-2-nitrobenzoic acid with 5-nitroquinoline and 6-nitroquinoline, and the 1:1 salt of 3-chloro-2-nitrobenzoic acid with 8-hydroxyqunoline have been determined at 190 K. In each crystal, the acid and base molecules are linked by a short O—H⋯N or N—H⋯O hydrogen bond.
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The title compound consists of discrete complexes with a square-pyramidal NiN5 coordination polyhedron for the metal ions. The complexes are linked by C—H⋯F hydrogen bonds into chains propagating along [001].
CCDC reference: 1951945
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In the title compound, the phenyl ring of the phenyl-ethynyl substituent is inclined to the mean plane of the imidazo[1,2-a]pyridine moiety by 18.2 (1)°.
CCDC reference: 1953481
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In the structures of two title compounds, the 4H-chromene derivative molecules are linked by N—H⋯O and N—H⋯N hydrogen bonds, forming double layers or ribbons.
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Benzo[1,2-c:3,4-c′:5,6-c"]trithiophene (D3h-BTT) is an easily prepared electron donor that readily forms charge–transfer complexes with organic acceptors. We report here two crystal structures of its charge–transfer complexes with 7,7,8,8-tetracyanoquinodimethane (TCNQ) and buckminsterfullerene (C60). The D3h-BTT·TCNQ complex crystallizes with mixed layers of donors and acceptors, with an estimated degree of charge transfer at 0.09 e. In the D3h-BTT·C60·toluene complex, the central ring of BTT is `squeezed' by the C60 molecules from both faces. However, the degree of charge transfer is low.