Exceptionally large difference in bond length among conformational isomorphs of a hexaphenylethane derivative with a dispiropyracene skeleton

Crystal Growth and Design

Volumn 5, Issue 6, 2005, Pages 2256-2260

  Kawai, Hidetoshi ^a   Takeda, Takashi ^a   Fujiwara, Kenshu ^a   Inabe, Tamotsu ^a   Suzuki, Takanori ^a  

^a HOKKAIDO UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 27744473755     PISSN: 15287483     EISSN: None     Source Type: Journal    
DOI: 10.1021/cg050064r     Document Type: Article

References (71)

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70. Another solution to overcome the steric congestion would be bond dissociation. For example, the parent 1,1,2,2-tetraphenylbenzocyclobutene transforms into the closed-shell 7,7,8,8-tetraphenyl-o-quinodimethane very easily by bond fission (ref 29). However, bond dissociation in 1 would produce the acenaphthene-5,6-diyl derivative, which cannot adopt the closed-shell structure. This may prevent this bond from homolytic rupture.
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