A novel chiral C2 axially symmetric acenaphtho­quinone diketal

The crystal structure of the title compound, (−)‐(4R,5R,4′′R,5′′R)‐4,5,4′′,5′′‐tetra­methyl­di­spiro­[1,3‐dioxalane‐2,1′(2′H)‐acenaphthyl­ene‐2′,2′′‐1,3‐dioxalane], C20H22O4, contains mol­ecules separated by normal van der Waals distances. The dioxa­cyclo­pentane rings adopt envelope conformations a...

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Veröffentlicht in:Acta crystallographica. Section E, Structure reports online Structure reports online, 2001-04, Vol.57 (4), p.o366-o367
Hauptverfasser: Parvez, Masood, Simion, Dan V., Sorensen, Ted S.
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container_title Acta crystallographica. Section E, Structure reports online
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creator Parvez, Masood
Simion, Dan V.
Sorensen, Ted S.
description The crystal structure of the title compound, (−)‐(4R,5R,4′′R,5′′R)‐4,5,4′′,5′′‐tetra­methyl­di­spiro­[1,3‐dioxalane‐2,1′(2′H)‐acenaphthyl­ene‐2′,2′′‐1,3‐dioxalane], C20H22O4, contains mol­ecules separated by normal van der Waals distances. The dioxa­cyclo­pentane rings adopt envelope conformations and the naphthalene moiety is essentially planar while the two C atoms bonded to it lie 0.122 (8) and 0.105 (8) Å on opposite sides from its mean plane.
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title A novel chiral C2 axially symmetric acenaphtho­quinone diketal
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