title: 5'-([1,1'-Biphen-yl]-4-yl)-1',1'',3''-tri-methyl-dispiro[indane-2,2'-pyrrolidine-4',5''-[1,3]diazin-ane]-1,3,2'',4'',6''-penta-one.
abstract: In the title compound, C30H25N3O5, the central five-membered heterocyclic ring adopts an envelope conformation, with the N atom as the flap. The dihedral angles between this central ring and the pendant indane ring system, the trione and benzene rings are 87.49 (5), 82.95 (10) and 72.42 (10)°, respectively. The dihedral angle between the rings of the biphenyl group is 45.99 (13)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds into [101] C(12) chains.
authors.affiliation: Department of Chemistry, Government Science College, Bangalore 560 001, India.
authors.lastname: Subramanyahegde
authors.affiliation: Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India.
authors.forename: Hosamani
authors.initials: H
authors.lastname: Amar
authors.affiliation: Department of Chemistry, Government Science College, Bangalore 560 001, India.
authors.forename: Yellappa
authors.initials: Y
authors.lastname: Shivaraj
authors.affiliation: Department of Chemistry, U.C.S., Tumkur University, Tumkur, Karnataka 572 103, India.
authors.forename: Giriyapura R
authors.initials: GR
authors.lastname: Vijayakumar
authors.affiliation: Department of Studies and Research in Physics, U.C.S., Tumkur University, Tumkur, Karnataka 572 103, India.
authors.forename: Bandrehalli Siddagangaiah
authors.initials: BS
authors.lastname: Palakshamurthy