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metal-organic compounds
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The binuclear title complex, [Zn2(C22H28N3O)2(C3H9OSi)2], has a crystallographic imposed centre of symmetry. The ZnII atom is coordinated by three O and one N atom from one 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenolate ligand and two bridging trimethylsilanolate anions in a distorted tetrahedral geometry. The dihedral angle between the benzotriazole ring system and the benzene ring is 19.83 (5)°. The tert-pentyl groups are disordered over two orientations with refined site-occupancy ratios of 0.858 (4):0.142 (4) and 0.665 (6):0.335 (6).
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The asymmetric unit of the title compound, [Mn2(C6H6O7)2(H2O)4]·C12H12N2·2H2O, comprises half of a centrosymmetric dimer, half of a 1,2-bis(pyridin-4-yl)ethane and one water molecule. Two citrate ligands bridge two MnII ions, the MnII ion being coordinated by four O atoms from the citrate(2−) ligands and two water O atoms, forming a distorted octahedral environment. In the crystal, O—H
O hydrogen bonds link the centrosymmetric dimers and lattice water molecules into a three-dimensional structure which is further stabilized by intermolecular π–π interactions [centroid–centroid distance = 3.792 (2) Å].
O hydrogen bonds link the centrosymmetric dimers and lattice water molecules into a three-dimensional structure which is further stabilized by intermolecular π–π interactions [centroid–centroid distance = 3.792 (2) Å].metal-organic compoundsOpen access
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The asymmetric unit of the title compound, [Zn2(C6H6O7)2(H2O)4]·C12H10N2·2H2O, comprises half of a centrosymmetric complex dimer, half of a 1,2-bis(pyridin-4-yl)ethene molecule, which lies across an inversion centre, and one lattice water molecule. Carboxylate groups of two dianionic citrate ligands bridge two ZnII ions to give the cyclic dimer, with each ZnII ion coordinated by four O atoms from the chelating citrate ligand (one hydroxy and three carboxylate, with one bridging) and two water O atoms, forming a distorted octahedral environment [Zn—O = 2.040 (3)–2.244 (3) Å]. In the crystal, O—HO and O—HN hydrogen bonds involving hydroxy groups and both coordinating and lattice water molecules link the dimers to give a three-dimensional framework structure.
O and O—HN hydrogen bonds involving hydroxy groups and both coordinating and lattice water molecules link the dimers to give a three-dimensional framework structure.organic compoundsOpen access
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In the title compound, C13H12N3O3+·Br−, the benzene and pyridinium rings form a dihedral angle of 82.0 (1)°. In the crystal, N—HBr and N—HO hydrogen bonds link the components into chains along [001]. In addition, weak C—HO and C—HBr hydrogen bonds are observed.
Br and N—HO hydrogen bonds link the components into chains along [001]. In addition, weak C—HO and C—HBr hydrogen bonds are observed.metal-organic compoundsOpen access
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The asymmetric unit of the title compound, [Mn2(C6H6O7)2(H2O)4]·C12H10N2·2H2O, contains half of the centrosymmetric Mn complex dimer, half of a 1,2-bis(pyridin-4-yl)ethene molecule, which lies across an inversion center, and one water molecule. Two citrate ligands bridge two MnII ions, and each MnII atom is coordinated by four O atoms from the citrate ligands (one from hydroxy and three from carboxylate groups) and two water O atoms, forming a distorted octahedral environment. In the crystal, O—HO and O—HN hydrogen bonds link the centrosymmetric dimers and lattice water molecules into a three-dimensional structure which is further stabilized by intermolecular π–π interactions [centroid–centroid distance = 3.959 (2) Å]. Weak C—HO hydrogen bonding interactions are also observed.
O and O—HN hydrogen bonds link the centrosymmetric dimers and lattice water molecules into a three-dimensional structure which is further stabilized by intermolecular π–π interactions [centroid–centroid distance = 3.959 (2) Å]. Weak C—HO hydrogen bonding interactions are also observed.organic compoundsOpen access
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In the title molecular salt, C15H17N2O+·Br−, the benzene and pyridinium rings form a dihedral angle of 83.0 (1)°. In the crystal, N—HBr and N—HO hydrogen bonds link the components into chains along [010]. These chains are linked by weak C—HO and C—HBr hydrogen bonds, forming a three-dimensional network.
Br and N—HO hydrogen bonds link the components into chains along [010]. These chains are linked by weak C—HO and C—HBr hydrogen bonds, forming a three-dimensional network.organic compoundsOpen access
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The asymmetric unit of the title hydrated salt, C18H40N4P+·Cl−·2H2O, consists of two ionic molecules and four water molecules. The molecular geometry around the pentacoordinate P atom is trigonal–bipyramidal, with a H atom and an apical N atom in axial positions and three N atoms with isobutyl substituents in equatorial positions. The Cl− ions and water molecules are connected via O—HCl hydrogen bonds, forming chains along [100]. The ethylene bridging groups are disordered with refined site-occupancy ratios of 0.578 (9):0.422 (9).
Cl hydrogen bonds, forming chains along [100]. The ethylene bridging groups are disordered with refined site-occupancy ratios of 0.578 (9):0.422 (9).
