Accession Number:

AD0694267

Title:

THE CRYSTAL STRUCTURE OF 1,5-ENDOMETHYLENEQUINOLIZIDINIUM p-TOLUENESULPHONATE,

Descriptive Note:

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF PURE CHEMISTRY

Personal Author(s):

• Huber,Carol Saunderson

Report Date:

1968-06-20

Pagination or Media Count:

12.0

Abstract:

The tosyl ester of the alkaloid lupinine cyclizes when heated, and the rearrangement product has been shown by a three-dimensional structure analysis to be 1,5-endomethylenequinolizidinium p-toluenesulphonate, C10H18NC7H7SO3-. The heavy-atom method was used to solve the structure, and refinement by block-diagonal least-squares techniques led to a final residual of 0.067 for 1793 observed reflexions. The two trans-fused six-membered rings comprising the quinolizidine ring system are in distorted chair forms, and the four-membered ring is puckered. The ions are arranged in pleated sheets, each positively charged region in one sheet facing a negatively charged region in an adjacent sheet. Author

Descriptors:

• (*ALKALOIDS
• *CRYSTAL STRUCTURE)
• CHEMICAL BONDS
• MOLECULAR STRUCTURE
• NITROGEN HETEROCYCLIC COMPOUNDS
• X RAY DIFFRACTION
• CANADA

Subject Categories:

• Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE