search results

The title compound, C₁₀H₂₄N₂O₂, was synthesized by N-alkyl­ation of 1,2-dichloro­ethane with racemic 2-amino-1-butanol. The mol­ecule lies on a crystallographic inversion center and the crystal structure is stabilized by inter­molecular O-HN and N-HO hydrogen bonds.

The title compound, C₂₁H₂₁NO₄S, is the key inter­mediate in the synthesis of tazobactam. The crystal structure is stabilized by inter­molecular C-HO hydrogen bonds.

The title compound, C₁₀H₂₆N₂O₂²⁺·C₂O₂^2-·5H₂O, is the oxalate salt of the drug ethambutol. Both the ethambutol cation and the oxalate anion lie about a crystallographic twofold axis which bis­ects the central C-C bonds of both ions. The O atom of one solvent water mol­ecule also lies on a twofold axis. The crystal structure is stabilized by inter­molecular O-HN and N-HO hydrogen bonds.

The title compound, C₂₃H₂₂N₄O₅S, is the key inter­mediate for the synthesis of tazobactam, a widely used -lacta­mase inhibitor. The crystal structure is stabilized by inter­molecular O-HN and N-HO hydrogen bonds.

During our research into novel nonlinear optical materials using 1,10-phenanthroline as an appending ligand on lanthanide iodates, crystals of an infinite layered Dy^III iodate compound, Dy(IO₃)₃(H₂O)·H₂O, were obtained under hydro­thermal conditions. The Dy^III cation has a dicapped trigonal prismatic coordination environment consisting of one water O atom and seven other O atoms from seven iodate anions. These iodate anions bridge the Dy^III cations into a two-dimensional structure. Through O-HO hydrogen bonds, all of these layers stack along [111], giving a supra­molecular channel, with the solvent water mol­ecules filling the voids.

In the title compound, C₁₈H₁₂N₂O₂, the carbazole ring system is essentially planar and makes a dihedral angle of 53.08 (4)° with the plane of the nitro­benzene ring. In the crystal structure, inversion-related mol­ecules form a C-HO hydrogen-bonded dimer.

In the title compound, [Ir₂(C₁₆H₁₃N₂O₃)₄Cl₂]·2CH₂Cl₂, the two Ir atoms, 3.7075 (6) Å apart, are bridged by two Cl atoms which straddle a twofold axis of rotation through the two Ir atoms. Each Ir centre resides in a distorted octa­hedral environment completed by two chelating 2,5-bis­(4-methoxy­phenyl)-1,3,4-oxadiazole ligands, with trans-N-N and cis-C-C dispositions. In the stacking structure, there are two types of hydrogen bonds, involving the meth­oxy substitutent, an N atom of the oxadiazole ring and the dichloro­methane solvent mol­ecules.

In the title compound, C₁₆H₁₁NO₃, the quinolin-8-yl­oxy and 2-carboxy­phenyl groups are linked through an ether O atom, the angle at this atom being 116.4 (1)° in one mol­ecule and 114.8 (1)° in the other independent mol­ecule. In both mol­ecules, the carboxylic acid group inter­acts with the heterocyclic moiety through an intra­molecular hydrogen bond.

The title compound, [ZnCl₂(bpp)]_n (where bpp is 1,3-di-4-pyridyl­propane, C₁₃H₁₄N₂), has been prepared by the hydro­thermal reaction of ZnCl₂ and bpp at 433 K. The Zn, Cl and central propyl C atom lie on the mirrors of the P2₁/m space group. The molecular structure shows a weave-like polymeric chain. Each Zn atom is coordinated by two N atoms and two Cl atoms in a distorted tetrahedral geometry, with the Zn-N distance being 2.055 (5) Å and the Zn-Cl distances being 2.239 (3) and 2.247 (2) Å.

The title compound, [(C₂H₅)₄N][Mo₃Cl₆O(C₂H₃O₂)₃], has been synthesized by the reaction of MoCl₃·3H₂O with CH₃COOH. The structure is a polymorph of the structure reported by Chen, Lu, Huang, Huang & Huang [Chin. J. Struct. Chem. (1993). 12, 117-123]. The crystal contains discrete cations and anions. The mono-oxo-capped trinuclear Mo cluster anion consists of three Cl atoms and three acetate groups that bridge the three edges of the Mo triangle; each Mo atom is also coordinated by one terminal Cl atom. The coordination around Mo is a distorted octahedron.

The title compound, [Ag₂(NO₃)₂(C₅H₅NS)]_n, was obtained from the reaction of silver nitrate with bis(4-pyridyl) disufide (4-PDS) in a mixture of ethanol and water, which suggests that the di­sulfide bond of 4-PDS can be cleaved under mild conditions. The structure of the title compound is a two-dimensional infinite array in which the asymmetric unit contains two Ag atoms, a pyridinium-4-thiol­ate mol­ecule and two nitrate groups. Each pyridinium-4-thiol­ate mol­ecule acts as a ₄ bridge, linking four Ag atoms, with Ag-S bond distances of 2.4870 (19), 2.5791 (19), 2.5992 (19) and 2.848 (2) Å. The AgAg distances lie in the range 2.889 (2)-3.049 (1) Å.

The title compound, C₁₀H₁₁Cl₂NO₂, consists of a benzene core functionalized by one nitro group, two methyl groups, and two chloro­methyl groups. The crystal structure is stabilized by inter­molecular C-HO non-classical hydrogen bonds and weak C-HCl inter­actions.

The title compound, C₃₃H₂₈IN₅O₆, is a mol­ecular clip based on the glycoluril framework. A 4-pyridinylethynyl-substituted benzene ring is fused to one seven-membered ring, which binds two of the N atoms from separate rings of the glycoluril system. The second, similar, seven-membered ring is fused to an iodo­benzene ring. The orientation of these fused-benzene-ring substituents is trans with respect to the glycouril framework. The crystal structure is stabilized by weak C-HO and C-HN hydrogen bonds and C-H inter­actions.

In the title complex, [PdCl₂(C₁₃H₁₄N₂O₂)], the central Pd^II atom is bonded to two pyridine N atoms and two terminal Cl atoms. The coordination geometry of the Pd atom is square planar with a slight tetrahedral distortion. The two Pd-N distances are 2.029 (3) and 2.057 (3) Å, and the N-Pd-N angle is 86.56 (13)°. The Pd-Cl distances are 2.2929 (11) and 2.2959 (11) Å, and the Cl-Pd-Cl angle is 90.84 (5)°.

In an effort to discover novel and potential boron-dipyrromethene (BODIPY) dyes, the title compound, C₁₉H₁₈BF₂N₃O₂, was prepared from 2,4-dimethyl­pyrrole, 4-nitro­benzaldehyde and BF₃·Et₂O in a one-pot reaction. There are two independent mol­ecules, A and B, in the asymmetric unit in which the dihedral angles between the benzene ring and boron-dipyrromethene mean plane have significantly different values [82.71 (8)° for mol­ecule A and 73.16 (8)° for mol­ecule B]. Inter­molecular C-H inter­actions help to stabilize the crystal structure.

In the title compound, C₁₂H₁₀F₃N₃O₂, the dihedral angle between the phenyl and pyrazole rings is 96.6 (3)°. In the crystal, pairs of O-HN hydrogen bonds link the mol­ecules, forming inversion dimers. Weak inter­molecular C-HF hydrogen bonds are also observed.

In the title compound, C₁₉H₁₅N₃OS, the 2-(cyano­imino)thia­zolidine unit is approximately planar and makes dihedral angles of 63.74 (13) and 68.56 (15)° with the plane of the benzoyl C atoms and the benzylidene phenyl ring, respectively. In the crystal structure, a weak inter­molecular C-HO inter­action is observed.

In the title compound, C₁₉H₁₅N₃OS, the 2-(cyano­imino)thia­zolidine unit is approximately planar and makes dihedral angles of 63.74 (13) and 68.56 (15)° with the plane of the benzoyl C atoms and the benzylidene phenyl ring, respectively. In the crystal structure, a weak inter­molecular C-HO inter­action is observed.

The crystal structure of the title compound, diferrocenium bis{bis[1,2-dimercaptoethene-1,2-dicarbonitrilato(2-)-S,S']- nickel(III)} ferrocene, is a 2:3 complex of [Ni{C₂S₂(CN)₂}₂] and [Fe(C₅H₅)₂]. The structural data suggest that the formula for this compound can be written as [Fe(C₅H₅)₂]₂[Ni{C₂S₂(CN)₂}₂]₂.[Fe(C₅H₅)₂].