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A strained cyclononadienyne

Lookup NU author(s): Emeritus Professor Bill CleggORCiD


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The title compound, methyl 8-chlorobicyclo[7.1.0]-deca-1,8-dien-4-yne-2-carboxylate, C12H11ClO2, crystallizes with two chemically equivalent and essentially geometrically and conformationally identical molecules in the asymmetric unit. A cyclopropane ring is fused to a nine-membered ring such that it is flanked by two double bonds; the presence of a triple bond in the larger ring generates considerable strain, evidenced in the marked non-linearity of the alkyne unit [165.2(2)-168.4 (2)° at the C atoms] and the wide angles within the ninemembered ring at the ring fusion atoms [153.09 (10)-155.5(2)°].

Publication metadata

Author(s): Clegg W, Al Dulayymi AR, Baird MS

Publication type: Article

Publication status: Published

Journal: Acta Crystallographica Section C: Crystal Structure Communications

Year: 1996

Volume: 52

Issue: 12

Pages: 3219-3222

Print publication date: 15/12/1996

ISSN (print): 0108-2701

ISSN (electronic): 1600-5759

Publisher: Wiley-Blackwell Publishing


DOI: 10.1107/S0108270196012152


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