103707-73-9Relevant academic research and scientific papers
The crystal structure of an enol silyl ether
Brisse, F.,Thoraval, D.,Chan, T. H.
, p. 739 - 743 (2007/10/02)
The crystal structure of the enol silyl ether compound, C28H33NO3Si, 1, has been established by direct methods and refined to a final value of 0.053 for 1825 observed reflections.The crystals belong to the monoclinic system, a=8.683(5), b=12.689(5), c=24.585(11) Angstroem, β=105.33(4) deg, and the space group is P21/c.The C(sp2)-C(sp2) bond distance is normal but the Si(1)-O(1)-C(1) angle with a value of 132.5(4) deg is larger than usual.This attributed to an interaction between Si(1) and O(2) of the N-acetate group, d(Si...O)=3.320(4) Angstroem.There is a distortion of the tetrahedral coordination around the silicon atom since the bond angles involving Si vary from 102.8(4) to 112.6(5) deg.All three phenyl rings and the N-acetate group are planar.The two phenyls at C(3) are inclined by Φ1=66.5, Φ2=58.7 deg with respect to the ethylenic group constituted of the two C(sp2) atoms and their four substituents.The molecules are held in the crystal by van der Waals forces only.
