Acta Crystallographica Section C

Crystal Structure Communications

Volume 59, Part 7 (July 2003)

Acta Cryst. (2003). C59, o373-o375 [doi:10.1107/S0108270103010825]

Precursors to dodecahedrane

L. Damodharan, V. Pattabhi, R. Sivakumar and S. Kotha

Abstract: The title compounds, (2R,2''S,3b'S,4a'R,7b'S,8a'R)-perhydrodispiro[furan-2,3'-dicyclopenta[a,e]pentalene-7',2''-furan]-5,5''-dione, C₂₀H₂₆O₄, and (3aR,3bR,4aR,4bS,5aS,8aR,8bR,9aR,9bS,10aS)-perhydrodipentaleno[2,1-a:2',1'-e]pentalene-1,6-dione, C₂₀H₂₆O₂, are intermediates identified during the synthesis of dodecahedrane. Crystallographic studies have established the ring-junction stereochemistry for these important intermediates. All the ring junctions are cis-fused, and the molecular packing is stabilized by van der Waals interactions.

Formula: C₂₀H₂₆O₄ and C₂₀H₂₆O₂

Online 20 June 2003


	Structure factor file (CIF format) (149.9 kbytes) Contains datablock I

	Structure factor file (CIF format) (74.3 kbytes) Contains datablock II

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