ISSN:
1572-8854
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract Crystals of the phenylurethane derivative of a novel bicyclic lactone, C18H21NO8, have an orthorhombic unit cell of dimensionsa = 8.648(2),b = 11.041(7),c = 19.589(4) Å, and belong to space groupP212121. The structure was solved by direct methods and was refined by the block diagonal approximation to a finalR value of 0.034 using 1035 reflections. The structure is made up of a six-membered lactone ring, in the boat conformation,cis-fused to a five-membered oxolane ring. The phenylurethane and the methoxy groups aretrans to each other, while the ethyl carboxylate group is attached in equatorial position.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01210392
Permalink