Crystal Structure of 6,6'-(3,3',5,5'-Tetra-tert-butylbiphenyl-2,2'-diyl)bis(oxy)

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The title complex,6,6-(3,3,5,5-tetra-tert-butylbiphenyl-2,2-diyl)bis(oxy)di-di-benzo[d,f]-[1,3,2] dioxaphosphepine(C52H56O6P2·C6H14,Mr = 881.99),was synthesized,and the structure was determined by X-ray single-crystal diffraction.The crystal belongs to the orthor-hombic system,space group Pbca,with a = 11.8400(13),b = 25.381(3),c = 34.243(4) ,V = 10290(2)3,Z = 8,Dc = 1.139 g/cm3,μ = 0.131 mm-1,T = 152(2) K,F(000) = 3768,the final R = 0.0773 and wR = 0.1820 for 9721 observed reflections with I > 2σ(I).The neighboring two molecules form a dimmer by face-to-face π…π interactions. The title complex, 6,6- (3,3,5,5-tetra-tert-butylbiphenyl-2,2-diyl) bis was synthesized, and the structure was determined by X-ray single-crystal diffraction. The crystal belongs to the orthorhombic system, space group Pbca, with a = 11.8400 (13) , b = 25.381 (3), c = 34.243 (4) , V = 10290 (2) 3, Z = 8, Dc = 1.139 g / cm3, μ = 0.131 mm-1, T = 152 , F (000) = 3768, the final R = 0.0773 and wR = 0.1820 for 9721 observed reflections with I> 2σ (I). The neighboring two molecules form a dimmer by face-to-face π ... π interactions.
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