In the crystal structure of the title compound, C(17)H(17)ClN(4)O, the existence of only one 2-imino-oxo of the five possible N-amino-imino/O-keto-hydr-oxy tautomers is observed and the dihedral angle between the aromatic rings is 29.78 (11)°. The mol-ecular conformation is stabilized by intra-molecular C-H⋯N, N-H⋯O and C-H⋯O hydrogen bonds, in each case generating a six-membered ring. In the c...

Photodegradation of an aqueous solution of Penciclovir (PC, 1) in phosphate buffer (pH 7) under aerobic condition was studied with light of wavelength>270 nm. Three major oxidation products were detected by means of spectroscopic measurements. The products were 4-hydroxy-(3-Hydroxymethyl) butyl spiro imino dihydantion (2), 4[4-hydroxy(3hydroxymethyl)butylamino]-2-imino-1,2-dihydroimidazol-5-one...

In the centrosymmetric dimeric title complex, [Fe(2)(C(14)H(10)N(2)O(4))(2)Cl(2)(C(2)H(6)OS)(2)]·2C(2)H(6)OS, two {Fe(L)Cl(DMSO)} units (L is the tridentate ligand 4-nitro-2-{[2-(oxidometh-yl)phen-yl]imino-meth-yl}phenolate; DMSO is dimethyl sulfoxide) are bridged by two O atoms, with an Fe⋯Fe separation of 3.1838 (8) Å. The coordination polyhedron of the Fe(III) atoms can be described as disto...

The title complex, [Cu(C22H19N2O3S2)2], was obtained from the reaction between (Z)-methyl 2-(5-benzyl-imino-4-benzyl-carbamo-thioyl-3-oxo-thio-lan-2-yl-idene)acetate and Cu(NO3)2. The Cu(II) atom is tetra-coordinated by two N,S-bidentate ligands, forming a highly distorted tetra-hedral environment. The structure displays two intra-molecular N-H⋯O hydrogen bonds.