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metal-organic compounds
In the title compound, [Cr(CO3)(C16H36N4)]Br·H2O, the chromium cation has a distorted octahedral geometry with ligation provided by the four N atoms of the `folded' macrocyclic ligand and by two O atoms of the bidentate carbonate anion. Two neighbouring chromium complexes are bridged by two strong N—H
O hydrogen bonds to form dimeric units which, in turn, are constituents of infinite chains formed by virtue of three other types of hydrogen bonds (N—HBr, N—HOw and Ow—HBr).
O hydrogen bonds to form dimeric units which, in turn, are constituents of infinite chains formed by virtue of three other types of hydrogen bonds (N—HBr, N—HOw and Ow—HBr).organic compounds
In the title compound, C20H24N2O4, the quinoxalinediyl bridging group separates two β-diketone groups, which are found to be in a pseudo-trans configuration. The major contributing packing forces are π–π interactions and weak but influential C—HO hydrogen bonds.
O hydrogen bonds.organic compounds
In the title molecular co-crystal, C6H6O3·C4H4N2, symmetry-related O—HN hydrogen bonds with ON distances of 2.790 (3) and 2.818 (2) Å link molecules of 1,2,3-trihydroxybenzene and pyrimidine to form 18-membered rings which, in turn, are constituents of infinite chains created by O—HO hydrogen bonds between hydroxy groups in positions 1 and 2 of neighbouring 1,2,3-trihydroxybenzene molecules. The infinite chains are further stacked in stepped columns by offset π-π interactions, and are linked by C—Hπ interactions, resulting in a herringbone pattern.
N hydrogen bonds with ON distances of 2.790 (3) and 2.818 (2) Å link molecules of 1,2,3-trihydroxybenzene and pyrimidine to form 18-membered rings which, in turn, are constituents of infinite chains created by O—HO hydrogen bonds between hydroxy groups in positions 1 and 2 of neighbouring 1,2,3-trihydroxybenzene molecules. The infinite chains are further stacked in stepped columns by offset π-π interactions, and are linked by C—Hπ interactions, resulting in a herringbone pattern.organic compounds
In the title molecular co-crystal, C6H6O3·C3H3N3, two hydrogen-bonded R44(18) tetrameric arrangements of molecules involving symmetry-related O—HN hydrogen bonds link molecules of 1,2,3-trihydroxybenzene and 1,3,5-triazine to form an infinite double-chain motif. The one-dimensional array associates with neighbouring strands, via C—HO interactions, to form supramolecular sheets that are stacked together by π–π interactions in a three-dimensional assembly.
N hydrogen bonds link molecules of 1,2,3-trihydroxybenzene and 1,3,5-triazine to form an infinite double-chain motif. The one-dimensional array associates with neighbouring strands, via C—HO interactions, to form supramolecular sheets that are stacked together by π–π interactions in a three-dimensional assembly.organic compounds
In the centrosymmetric title compound, C16H20N42−·Br2+, the Br counter-ions form hydrogen bonds with protonated imidazole groups. Neighbouring cations are held together via weak C—HBr hydrogen bonds and offset π–π interactions, resulting in the formation of a three-dimensional structure.
Br hydrogen bonds and offset π–π interactions, resulting in the formation of a three-dimensional structure.
