1,3-Bis(3-phenyl­prop­yl)benzimidazolium bromide monohydrate

In the title compound, C25H27N2 +·Br−·H2O, the benzimidazole unit is essentially planar, with a maximum deviation of 0.020 (6) Å. The benzimidazole unit makes dihedral angles of 83.6 (3) and 81.0 (3)° with the two terminal phenyl rings. The dihedral angle between the phenyl rings is 58.5 (4)°. In the crystal structure, there are C—H⋯O hydrogen bonds, a C—H⋯π inter­action between a phenyl H atom and the phenyl ring of a neighbouring mol­ecule, and a π–π inter­action [3.512 (3) Å] between the centroids of the five-membered ring and the benzene ring of the benzimidazole unit of an adjacent mol­ecule

N′-[(2Z)-3-Allyl-4-oxo-1,3-thia­zolidin-2-yl­idene]-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

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

1-Cyclo­hexyl­methyl-3-methyl-2-[(phenyl­imino)(sulfido)meth­yl]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

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

Bis[dichlorido(5,5′-dimethyl-2,2′-bi­pyridine-κ2 N,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

4-(9-Anthr­yl)-1-(4-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

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

1,1 '-butane-1,4-diylbis(1H-benzimidazole)

The molecule of the title compound, C18H18N4, is disposed about a center of inversion. The dihedral angle between the five- and six-membered rings is 1.23 (6)degrees, showing almost exact coplanarity

Efficient synthesis of some oxalacetic acid and pyruvic acid derivatives from the reactions of 2,3-furandiones with 2-phenylindole

Oxalacetic acid and pyruvic acid derivatives have been synthesized efficiently in high yields by the treatment of 4-ethoxycarbonyl-5phenyl-2,3-furandione and 4-benzoyl-5-phenyl-2,3-furandione with 2-phenylindole at room temperature and converted to simple derivatives such as an ester or a hydrazone. (C) 2008 Elsevier Ltd. All rights reserved