Sesquiterpenoids. Part IV. The stereochemistry of humulene: X-ray analysis of the humulene–silver nitrate adduct
- 1 January 1966
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society B: Physical Organic
- p. 112-120
- https://doi.org/10.1039/j29660000112
Abstract
X-Ray analysis of the humulene–silver nitrate adduct has established the stereochemistry of humulene, the predominant sesquiterpene of hop oil. Each Ag+ ion is bonded to one carbon–carbon double bond at an average Ag+⋯ C distance of 2·38 Å. The adduct crystallises in the monoclinic system, with a= 15·06, b= 6·95, c= 17·94 Å, β= 98° 55′; there are four C10H24,2AgNO3 units in the cell and the space group is P21/c. The atoms were located in three-dimensional electron-density distributions and their positions refined by the method of least squares. The final discrepancy, R, over 2344 independent reflections is 16·1%.Keywords
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