Repozytorium

Dimethyl [3,3,4,4,5,5- hexamethyl-1(E), 2(E)-cyclopentandiylidene]diacetate, C17H26O4.

Autorzy

Lucjan B. Jerzykiewicz

Tadeusz Lis

Jan Baran

D. Dziewońska-Baran

Rok wydania

1994

Czasopismo

Acta Crystallographica Section C: Structural Chemistry

Numer woluminu

C50

Strony

729-732

DOI

10.1107/S0108270193011837

Kolekcja

Naukowa

Język

Angielski

Typ publikacji

Artykuł

Streszczenie

To establish the conformation of the diene system of the ti- tle compound, its structure was determined by X-ray anal- ysis. The non-planar butadiene fragment is in a gauche conformation [torsion angle 44.8 (9)°]. The methoxycar- bonyl groups are fully eclipsed with respect to the single bond in the diene system. The five-membered ring adopts a distorted envelope conformation with the apical C atom at position 3. In the cyclopentane r~g, elongations of C-- C bonds [1.587 (2) and 1.575 (2) A] and contractions of C--C--C bond angles [99.9 (2), 104.0 (2), 103.3 (2) ° ] in- volving atoms at positions 3, 4 and 5 are observed.

Adres publiczny

https://doi.org/10.1107/S0108270193011837

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