In the title compound, C(24)H(24)N(2)O(2), the five-membered ring of the indoline ring system adopts an envelope conformation with the spiro C atom at the flap. The dihedral angle between the benzene ring of the indoline ring system and the naphthalene ring system is 71.70 (7)°. In the crystal structure, pair of weak C-H⋯O hydrogen bonds link the mol-ecules into centrosymmetric dimers.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3006916 | PMC |
| http://dx.doi.org/10.1107/S1600536810022890 | DOI Listing |
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