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1'-Methyl-4'-phenyldispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

ABSTRACT: The conformation of the title compound, C(27)H(21)NO(3), is stabilized by a weak intra-molecular C-H⋯O hydrogen bond, which generates an S(6) ring motif. The pyrrolidine ring adopts a half-chair conformation. Both of the other five-membered rings are in envelope conformations. No significant inter-molecular hydrogen bonds are observed.

SUBMITTER: Wei AC

PROVIDER: S-EPMC3200932 | biostudies-literature | 2011 Sep

REPOSITORIES: biostudies-literature

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1'-Methyl-4'-phenyldispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Wei Ang Chee AC Ali Mohamed Ashraf MA Choon Tan Soo TS Quah Ching Kheng CK Fun Hoong-Kun HK

Acta crystallographica. Section E, Structure reports online 20110827 Pt 9

The conformation of the title compound, C(27)H(21)NO(3), is stabilized by a weak intra-molecular C-H⋯O hydrogen bond, which generates an S(6) ring motif. The pyrrolidine ring adopts a half-chair conformation. Both of the other five-membered rings are in envelope conformations. No significant inter-molecular hydrogen bonds are observed. ...[more]

PMID: 22064935

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4'-(4-Chlorophenyl)-1'-methyldispiro[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Project description:In the title compound, C(27)H(20)ClNO(3), the two cyclo-pentane rings adopt envelope conformations. The pyrrolidine ring also adopts an envelope conformation (with the spiro C atom as the flap) and its least-squares plane (fitted to five atoms) makes dihedral angles of 66.50 (9), 77.36 (8) and 73.76 (8)° with the chloro-benzene ring and the two 2,3-dihydro-1H-indene ring systems, respectively. The mol-ecular conformation is stabilized by an intra-molecular C-H⋯O hydrogen bond, which generates an S(6) ring motif. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds into chains running parallel to the [001] direction.

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1'-Methyl-4'-(1-naphth-yl)-1'',2'',3'',4''-tetra-hydro-indane-2-spiro-2'-pyrrolidine-3'-spiro-2''-naphthalene-1,3,1''-trione.

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