Xing-You Xu

Ethyl 4-(2-hydroxy­phen­yl)-6-methyl-2-oxo-1,2,3,4-tetra­hydro­pyrimidine-5-carboxyl­ate

In the title molxadecule, C14H16N2O4, all bond lengths and angles are normal. The crystal packing is stabilized by interxadmolecular O—H⋯O hydrogen bonds involving the hydrxadoxy and keto groups, and by N—H⋯O hydrogen bonds involving the amino and keto groups.

Synthesis and Crystal Structure of A New Dinuclear Cu(II) Complex

A new dinuclear copper(II) complex was synthesized by reaction of 5,5‐diphenylimidazoline‐2,4‐dione (phenytoin, PHT), 3‐amino‐1‐propanol(PA) and copper acetate. Its crystal structure was determined by single crystal X‐ray diffraction. The compound crystallizes in the monoclinic system, space group C2/c with a=28.429(10), b=8.328(3), c=17.863(7) Å, β=111.189(6)°; V=3943(2) Å3, Mr=833.87, Z=4, F(000)=1736, Dc=1.405 g/cm3, μ=1.137 mm−1, the final R=0.0699 and wR=0.1737. The symmetric unit is comprised of four molecules. The complex is a centrosymmetric plane in which each copper(II) is coordinated in the quadrilateral plane to the ligand phenytoin through the deprotonated oxygen atom of 3‐amino‐1‐propanol as well as the nitrogen atoms of imine and amine. The Cu(II)…Cu(II) average distance is 3.005 (19) Å.

(3-Ammonio-2-hydroxy­prop­yl)carbamate monohydrate

The asymmetric unit of the title compound, C4H10N2O3·H2O, contains one zwitterionic organic molecule and two half-molxadecules of water, the O atoms of which lie on a twofold axis. Interxadmolecular hydrogen bonds involving the water molxadecules, the ammonium cationic group and the carboxylate group link the molxadecules into an extended three-dimensional network.

trans-Diaqua­bis(5,5-diphenyl­hydantoinato-κN3)copper(II)

The molecule of the title complex, [Cu(C15H11N2O2)2(H2O)2], lies on a twofold rotation axis. The crystal structure is based on a network of interxadmolecular N—H⋯O=C and O—H⋯O=C interxadactions.

trans-Bis(5,5-diphenyl­hydantoinato-κN3)bis­(furfurylamine-κN)copper(II) 5,5-diphenyl­hydantoin disolvate

In the title compound, [Cu(C15H11N2O2)2(C5H7NO)2](C15H12N2O2)2, the CuII ion, lying on an inversion centre, is coordinated in a square-planar coordination geometry; two other 5,5-diphenylxadhydantoin molxadecules are uncoordinated. The crystal structure includes interxadmolecular N—H⋯O hydrogen bonds, forming a two-dimensional network.

A trinuclear manganese(II) complex of 2-acetyl-5-methoxy­phenol

In the title centrosymmetric compound, hexaxadkis(μ-2-acetyl-5-methoxyxadphenolato)trimanganese(II), [Mn3(C9H6O3)6], three MnII atoms are linearly linked by deprotonated hydroxyl groups of paeonol anions. One Mn atom is located on an inversion center and is coordinated by six hydrxadoxy O atoms, and the Mn atom located on a general position is coordinated by three hydrxadoxy O and three acetyl O atoms. Within the trinuclear molxadecule, there is a short Mn⋯Mn separation of 3.0464u2005(8)u2005A.

trans-Diaqua­bis(5,5-diphenyl­hydantoinato-κN3)bis­(hexa­methyl­enetetra­amine-κN)cobalt(II) hemihydrate

In the title complex, [Co(C15H11N2O2)2(C6H12N4)2(H2O)2]·0.5H2O, the CoII ion lies on an inversion centre and is coordinated in a distorted octaxadhedral geometry. There are intra- and interxadmolecular N—H⋯O, O—H⋯O and O—H⋯N hydrogen bonds, forming a two-dimensional network in the crystal structure.

Bis(5,5-diphenyl­hydantoinato-κN3)copper(II) 2-methyl-3,4,5,6-tetrahydropyrimidine solvate

The title complex, [Cu(C14H11N2O2)2]·C5H10N2, contains one [Cu(pht)2] (pht is 5,5-diphenylxadhydantoinate) complex molxadecule and one solvent molecule. The complex shows a three-dimensional network structure assembled by interxadmolecular N—H⋯O=C interxadactions.

4,4′-[Piperazine-1,4-diylbis(propyl­ene­nitrilo­methyl­idyne)]diphenol

In the title molecule, C24H32N4O2, the piperazine ring adopts a chair conformation and the dihedral angle between the two benzene rings is 35.4u2005(1)°. In the crystal structure, intermolecular O—H⋯N hydrogen bonds link molecules into chains along [001].

Ethyl­enediammonium bis­(5-methyl-3-oxo-2-phenyl-2,3-dihydro­pyrazol-1-ide): a hydrogen-bond-supported supra­molecular ionic assembly

The title compound, C2H10N2 2+·2C10H9N2O−, is composed of deprotonated 5-methyl-2-phenyl-1H-pyrazol-3(2H)-one anions (PMP−) and protonated ethylenediamine cations (H2en2+). The ethylenediammonium ion is located on a crystallographic inversion center. The dihedral angle between the phenyl and pyrazole rings is 39.73u2005(8)°. The two components are connected through N—H⋯O and N—H⋯N hydrogen bonds, forming an infinite three-dimensional network.