1,2-Bis(phenyl-phosphor-yl)ethane.

ABSTRACT: The geometric parameters of the mol-ecule of the title compound, C(14)H(16)O(2)P(2), are in the usual ranges. It is a meso compound with the two chiral P atoms having opposite configurations. The P-CH(2)-CH(2)-P chain adopts a trans conformation [torsion angle -178.59 (17)°]. The P=O bonds are almost coplanar with the adjacent phenyl ring [torsion angles = 3.8 (3) and 0.3 (3)°]. Whereas one of them is synclinal [torsion angle = -59.0 (2)°] to the central C-C bond, the other is anti-clinal [torsion angle = 56.6 (2)°] to the central C-C bond. The dihedral angle between the two phenyl rings is 5.2 (3)°. The mol-ecules are linked by weak C-H⋯O hydrogen bonds. They crystallize in rows running along the c axis.

SUBMITTER: Dornhaus F 

PROVIDER: S-EPMC2915368 | biostudies-literature | 2007 Dec

REPOSITORIES: biostudies-literature