STRUCTURE OF 3-BENZOYL-4-METHYL-1-PHENYL-1,2,3,4-TETRAHYDRO-5H-INDENO[1,2-B]PYRIDINE-2,5-DIONE

C26H19NO3, M(r) = 393.442, triclinic, P1BAR, a = 8.630 (1), b = 9.908 (4), c = 13.549 (16) angstrom, alpha = 107.73 (3), beta = 94.96 (5), gamma = 112.51 (3)-degrees, V = 991.85 (1.31) angstrom3, Z = 2, D(m) = 1.30, D(x) 1.317 Mg m-3, lambda(Mo K-alpha) = 0.71069 angstrom, mu = 0.080 mm-1, F(000) = 412, T = 293 K, R = 0.050 for 21 10 unique observed reflections. The pyridone ring has a half-chair conformation with in-ring torsions in the N-C(carbonyl) and N-C(indenyl) bonds of 6.3 (5) and 15.6 (5)-degrees, respectively. The phenyl-substituted N is planar to within 0.013 (3) angstrom.