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catena-Poly[[hexakis(μ-4-methylbenzoato)-κ2 O,O′;κ15 O,O′:O-trieuropium(III)]-tris(μ-4-methylbenzoato)-κ2 O,O′;κ6 O,O′:O]
The title europium(III) carboxylate, [Eu3(C8H7O2)9]n, has three independent Eu atoms, two of which are eight-coordinate in a square-antiprismatic coordination geometry, whereas the third is nine-coordinate in a tricapped trigonal-prismatic coordination geometry. The metal atoms are linked by two bidentate and seven tridentate methylbenzoate groups into a linear chain running along the b-axis direction
Diaquabis(4-methylbenzoato-κO)zinc(II)
The Zn atom in the title mononuclear complex, [Zn(C8H7O2)2(H2O)2], lies on a special position of site symmetry 2. The carboxylate group binds in a monodentate manner so that the geometry is best described as tetrahedral. Adjacent molecules are linked by O—H⋯O hydrogen bonds into a three-dimensional network
Aquachlorido(4-methylbenzoato-κO)(1,10-phenanthroline-κ2 N,N′)copper(II)
In the title mononuclear complex, [Cu(C8H7O2)Cl(C12H8N2)(H2O)], the CuII atom is coordinated by one carboxylate O atom from a monodentate 4-methylbenzoate ligand, two N atoms from the 1,10-phenanthroline ligand, one chloride ion and one water molecule in a square-pyramidal geometry. The crystal structure exhibits inter- and intramolecular C—H⋯Cl, C—H⋯O, O—H⋯Cl and O—H⋯O hydrogen bonds, as well as C—H⋯π interactions of phenanthroline and methyl H atoms towards the π-systems of neighboring 4-methylbenzoate units and the pyridine rings of the phenanthroline system [centroid–centroid distances are 2.706 (2) and 2.992 (1) Å, respectively]
Poly[pentaaquatetrakis(μ2-nicotinato-κ2 N:O)(perchlorato-κO)lanthanum(III)disilver(I)]
In the title complex, [Ag2La(C6H4NO2)4(ClO4)(H2O)5]n, the LaIII atom, lying on a twofold rotation axis, is eight-coordinated by four O atoms from four nicotinate (nic) ligands and four water molecules in a distorted square-antiprismatic coordination geometry. The AgI atom is coordinated in an almost linear fashion by two pyridyl N atoms of two nic ligands. The linear coordination is augmented by weak interactions with one O atom from a half-occupied ClO4
− anion and a water molecule lying on a twofold axis. Two Ag(nic)2 units connect two La atoms, forming a cyclic unit. These units are further extended into an infinite zigzag chain. The chains are bridged by the disordered perchlorate ions via weak Ag—O [2.678 (2) Å] interactions. O—H⋯O hydrogen bonds, weak Ag⋯Ag [3.3340 (15) Å] interactions and π–π interactions between the pyridyl rings [centroid–centroid distance = 3.656 (2) Å] lead to a three-dimensional network
Aquabis(1H-imidazole-κN 3)bis(4-methylbenzoato-κ2 O,O′)cadmium(II)
In the title compound, [Cd(C8H7O2)2(C3H4N2)2(H2O)], the CdII atom is coordinated by four carboxylate O atoms from two bidentate chelating 4-methylbenzoate ligands, two N atoms from two imidazole ligands and one water molecule in a distorted pentagonal bipyramidal geometry. Intermolecular O—H⋯O hydrogen bonds between the coordinated water molecule and the carboxylate O atoms of 4-methylbenzoate lead to an infinite chain. These chains are further self-assembled into a two-dimensional layer through N—H⋯O hydrogen bonds between the imidazole ligands and carboxylate groups. One of the imidazole ligands is disordered over two positions with site-occupancy factors of 0.737 (4) and 0.263 (4)
Aquabis(4-methylbenzoato)-κO;κ2 O,O′-bis(pyridine-κN)nickel(II)
In the title mononuclear complex, [Ni(C8H7O2)2(C5H5N)2(H2O)], the NiII atom is in a distorted octahedral arrangement, coordinated by three carboxylate O atoms from one bidentate 4-methylbenzoate ligand and one monodentate 4-methylbenzoate ligand, two N atoms from pyridine ligands, axially positioned, and a water molecule. The equatorially positioned water molecule and uncoordinated carboxylate O atom form an intramolecular hydrogen bond. An intermolecular O—H⋯O hydrogen bond between the coordinated water molecule and carboxylate O atom of the 4-methylbenzoate ligand forms infinite chains along the b axis. These chains are connected by C—H⋯π interactions
Bis(1H-benzimidazole-κN 3)bis(4-methylbenzoato-κ2 O,O′)copper(II)
In the title mononuclear complex, [Cu(C8H7O2)2(C7H6N2)2], the CuII atom lies on an inversion centre and is coordinated by two O atoms of two monodentate 4-methylbenzoate ligands and two N atoms of two benzimidazole ligands in a square-planar geometry. The molecules are linked into chains running parallel to the b axis by intermolecular N—H⋯O hydrogen bonds and by π–π stacking interactions [centroid–centroid distance = 3.669 (2) Å] involving centrosymmetrically related imidazole rings
5H-Imidazo[4,5-f][1,10]phenanthroline
The title molecule, C13H8N4, is is essentially planar [r.m.s. deviation for all non-H atoms = 0.025 (3) Å]. In the crystal, molecules are connected through one weak bifurcated N—H⋯(N,N) hydrogen bond and three π–π stacking interactions between pyridine and imidazole rings [centroid–centroid distance = 3.631 (8) Å] and between pyridine and benzene rings [centroid–centroid distances = 3.675 (5) and 3.666 (2) Å]
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