Acta Crystallographica Section E: Structure Reports Online - Volume 64, issue Pt 2

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Electronic ISSN
1600-5368

Abstract

The title compound {systematic name: spiro­[cyclo­pentane-1,2′(1′H)-quinazolin]-4′(3′H)-one]}, C12H14N2O, has been reported previously [Klemm, Weakley, Gilbertson & Song (1998 ▶). J. Heterocycl Chem. 35, 1269–1273]. Its structure ha

Abstract

In the title compound, C30H26, the dihedral angle between the two fluorene ring systems is 61.75 (4)°.

Abstract

Mol­ecules of the title compound, C23H26Cl2O4, are linked by hydrogen bonds between the hydroxyl O atom and the carbonyl O atom of a neighboring mol­ecule. The central hydropyran and fused cyclohexanone rings adopt half-chair conformations, while the fu

Abstract

The conformation of the N—H bond in the structure of the title compound (3NPDCA), C8H6Cl2N2O3, is anti to the meta-nitro group, similar to that in the structures of 2-chloro-N-(3-nitro­phen­yl)acetamide (3NPCA) and 2,2,2-

Abstract

In the title compound, C16H15NO3S, the plane of the phenyl ring forms a dihedral angle of 80.37 (8)° with the indole ring system. The crystal packing is stabilized by weak O—H⋯O hydrogen bonds which link the mol­ecules into infinite chains along the a axis

Abstract

The conformation of the N—H bond in the structure of the title compound (3CPA), C8H8ClNO, is anti to the meta-chloro substituent, in contrast to the syn conformation observed for the ortho-chloro substituent in N-(2-chloro­phen­yl)acetamide