
TY  - JOUR
A1  - Cannon, JR 
A1  - Patrick, VA 
A1  - White, AH 
T1  - The Conformation of Some 1,1,2,2-Tetraacylethanes in the Solid-State: Crystal-Structures of 1,1,2,2-Tetrabenzoylethane, 1,2-Diacetyl-1,2-Dibenzoylethane and 1,1,2,2-Tetraethoxycarbonylethane
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1986
VL  - 39
IS  - 11
SP  - 1811
EP  - 1821
KW  - 
UR  - https://doi.org/10.1071/CH9861811 
N2  - The crystal structures of 1,1,2,2-tetrabenzoylethane (3), 1,2-diacetyl- 1,2-dibenzoylethane (4) and 1,1,2,2-tetraethoxycarbonylethane (tetraethyl ethanetetracarboxylate ) (5) have been determined by X-ray diffraction from diffractometer data at 295 K and were refined by least-squares techniques to residuals of 0.050 (1077 'observed' reflections), 0.056 (3020) and 0.041 (480), respectively. Crystals of (3) are triclinic, P&#299; , Z 1, a 6.145(2), b 9.002(3), c 11.261(3) &#506;; &#945; 101.91(3), &#946; 91.88(3), &#947; 105.94(3)&#176;. Crystals of (4) are also triclinic, P&#299; , Z 2, a 17.119(5), b 7.210(1), c 7.175(2) &#506;, &#945; 89.59(2), &#946; 72.92(2), &#947; 87.87(2)&#176;. Crystals of (5) are tetragonal, P42/n, Z 4, a 17.748(6), c 5.515(1)&#506;. In the solid state each compound exists in the keto form which adopts the antiperiplanar conformation about the central carbon-carbon bond. 
ER  -

