Selvi Karaca

4-(9-Anthryl)-1-(2-methoxyphenyl)spiro[azetidin-3,9′-xanthen]-2-one

In the title molecule, C36H25NO3, the β-lactam ring is essentially planar, with a dihedral angle of 3.3 (2)° between the two separate three-atom N/C/C planes. The β-lactam ring makes dihedral angles of 28.45 (14), 87.4 (1) and 51.8 (1)° with the mean planes of the benzene, xanthene and anthracene ring systems, respectively. In addition to a weak intramolecular C—H⋯N hydrogen bond, the crystal structure is stabilized by two weak intermolecular C—H⋯O hydrogen bonds.

2-[1-(4-Ethoxy­phen­yl)-2-oxo-4-styryl­azetidin-3-yl]isoindoline-1,3-dione

The title compound, C27H22N2O4, contains a nearly planar four-membered β-lactam ring, which makes dihedral angles of 74.64 (12), 1.70 (11) and 73.67 (12)° with the nine-membered ring system, the benzene ring and the phenyl ring, respectively. The crystal structure is stabilized by C—H⋯O and C—H⋯π interactions and a π–π interaction [centroid–centroid distance = 3.4505 (19) Å] is also present.

Bis[dichlorido(5,5′-dimethyl-2,2′-bi­pyridine-κ2N,N′)gold(III)] tetra­chlorido­aurate(III) dichloridooaurate(I)

The title compound, [AuIIICl2(C12H12N2)]2[AuIIICl4][AuICl2], contains three distinct types of Au atom. In the cation, the AuIII atom is four-coordinated in a distorted square-planar arrangement by an N,N′-bidentate 5,5′-dimethyl-2,2′-bipyridine ligand and two terminal Cl atoms. In the [AuCl4]− anion, the centrosymmetric AuIII atom has a square-planar coordination. The centrosymmetric [AuCl2]− anion is linear. Intra- and intermolecular C—H⋯Cl hydrogen bonds help to establish the conformation and packing.

Methyl 2-(2-hydroxy­benzyl­ideneamino)-4,5,6,7-tetra­hydro-1-benzothio­phene-3-carboxyl­ate

In the title compound, C17H17NO3S, the cyclohexene ring is essentially planar, with a maximum deviation of 0.006 (1) Å. The cyclohexene ring adopts a half-chair conformation. The dihedral angle between the thiophene and benzene rings is 29.7 (1)°. The molecular structure exhibits intramolecular O—H⋯O, O—H⋯N and C—H⋯S hydrogen bonds, which generate one S(5) and two S(6) motifs. There is also a C—H⋯π interaction between the cyclohexene ring system and the π-system of the benzene ring.

N'-[(2Z)-3-Allyl-4-oxo-1,3-thia-zolidin-2-yl-idene]-5-fluoro-3-phenyl-1H-indole-2-carbohydrazide.

In the title compound, C21H17FN4O2S, the planar indole fused-ring [maximum deviation 0.009 (1) Å] makes dihedral angles of 54.75 (9) and 14.90 (9)°, respectively, with the phenyl ring and the dihydrothiazolyl ring. The –CH2CH=CH2 substituent is disordered over two positions in a 0.51 (1):0.49 (1) ratio. An intramolecular N—H⋯S hydrogen bond generates an S(5) ring motif. The two independent molecules are linked into a dimer by two N—H⋯O hydrogen bonds, forming an R 2 2(10) ring motif. The crystal structure features intermolecular C—H⋯π and π–π stacking [centroid–centroid distance = 3.679 (1) Å] interactions. C—H⋯O and C—H⋯F interactions are also present.

5-Chloro­benzothia­zole-2-spiro-3′-indolin-2′-one

The title compound, C14H9ClN2OS, crystallizes with two unique molecules, A and B, in the asymmetric unit. The five-membered rings of the benzothiazole groups in both molecules adopt an envelope conformation [puckering parameters: q 2 = 0.242 (1) Å and ϕ2 = 217.5 (4)° for A, and q 2 = 0.234 (1) Å and ϕ2 = 37.7 (4)° for B]. The five-membered rings of the indolinone groups in both molecules are also not planar, with a twisted conformation [puckering parameters are q 2 = 0.112 (2) Å and ϕ2 = 126.3 (8)° for A, and q 2 = 0.108 (2) Å and ϕ2 = 306.4 (9)° for B]. In the crystal structure, there are intermolecular N—H⋯O, N—H⋯S and C—H⋯O hydrogen-bonding interactions, forming the layers propagating normal to c.

Bis(phenanthridinium) hexa­chloridoplatinate(IV) dimethyl sulfoxide disolvate

The asymmetric unit of the title compound, (C13H10N)2[PtCl6]·2C2H6OS, contains one independent protonated phenanthridinium cation, half of a centrosymmetric [PtCl6]2−anion and one dimethyl sulfoxide solvent molecule. Intramolecular N—H⋯O and intermolecular C—H⋯Cl hydrogen-bonding interactions seem to be effective in the stabilization of the structure.

1-Cyclo-hexyl-methyl-3-methyl-2-[(phenyl-imino)(sulfido)meth-yl]benzimidazolium.

In the zwitterionic title compound, C22H25N3S, the benzimidazole ring system makes a dihedral angle of 55.69 (11)° with the phenyl ring. In the crystal structure, inter- and intramolecular C—H⋯S interactions occur.

Dichlorobis[1-(2-ethoxyethyl)-1H-benzimidazole-κN3]nickel(II)

# 2005 International Union of Crystallography Printed in Great Britain ± all rights reserved The title compound, [NiCl2(C11H14N2O)2], was synthesized from 1-(2-ethoxyethyl)benzimidazole and nickel dichloride in ethanol and is isostructural with its cobalt analogue. It shows a distorted tetrahedral geometry about Ni, involving two Cl atoms and two benzimidazole N atoms. The crystal structure is stabilized by CÐH Cl and CÐH O interactions.

Methyl trans-(±)-1-oxo-2-phenethyl-3-(thio­phen-2-yl)-1,2,3,4-tetra­hydro­isoquinoline-4-carboxyl­ate

In the title compound, C23H21NO3S, the piperidine ring of the tetrahydroisoquinolinone unit adopts a screw-boat conformation. The thiophene ring is disordered in a 0.700 (3):0.300 (3) ratio by an approximate 180° rotation of the ring around the C—C bond linking the ring to the tetrahydroisoquinolinone unit. The benzene ring of the tetrahydroisoquinolinone unit makes dihedral angles of 83.1 (2) and 62.38 (11)° with the major occupancy thiophene ring and the phenyl ring, respectively. The dihedral angle between the phenyl ring and the thiophene ring is 71.0 (2)°. In the crystal structure, molecules are linked together by intermolecular C—H⋯O and C—H⋯π interactions.