
%0 Journal Article
%A Cannon, JR 
%A Patrick, VA 
%A White, AH 
%T 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
%J Australian Journal of Chemistry
%D 1986/11/01
%V 39
%N 11
%P 1811-1821
%K 
%R https://doi.org/10.1071/CH9861811
%U https://www.publish.csiro.au/paper/CH9861811 
%X 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. 
