6,6-DICHLORO-1-METHYL-3,4,5-TRIPHENYLBICYCLO(3.1.0)HEX-3-EN-2-ONE AND 3-CHLORO-2-METHYL-4,5,6-TRIPHENYLPHENOL
Barnes, JC; Horspool, WM; Mackie, FI; ,
(I) C25H18Cl2O, M(r) = 405.32, monoclinic, I2/a, a = 23.95 (2), b = 6.550 (6), c = 26.59 (2) angstrom, beta = 96.4 (1)-degrees, V = 4145.2 (10) angstrom 3, Z = 8, D(x) = 1.298 Mg m-3, lambda(Cu K-alpha) = 1.5418 angstrom, mu = 2.95 mm-1, F(000) = 1680, T = 293 K, R = 0.0735 for 1700 reflexions. (II) C25H19ClO, M(r) = 370.88, monoclinic, P2(1)/n, a = 12.211 (8), b = 26.50 (2), c = 12.477 (9) angstrom, beta = 99.12 (1)-degrees, V = 3986.4 (8) angstrom 3, Z = 8, D(x) = 1.236 Mg m-3, lambda(Mo K-alpha) = 0.71069 angstrom, mu = 0.20 mm-1, F(000) = 1552, T = 293 K, R = 0.091 for 1625 reflexions. Photolysis of (I) gave the phenol (II) instead of the expected phenanthrene. There are no abnormal bond lengths or angles in either structure. The two unrelated molecules in (II) are connected by a weak hydrogen bond [3.15 (1) angstrom]. A loose cluster of four molecules is made up of centrosymmetrically related hydrogen-bonded pairs.