... Volume: Page: Digital Object Identifier (DOI). ... 1 H of ortho protons of substituents (C 6 D 6 solvent). Ph 2 C(2) C(1) O 13 C{ 1 H} (CDCl 3 or C 6 D 6 solvent) a. M, PR 3, 31 P{ 1 H} (C 6 D 6 solvent), C(2), C(1), Ph syn to M (2 H), Ph anti to M (2 H), IR (cm - 1 ) d. ...