Abstract
X-Ray diffraction measurements of long and short spacings are reported for the crystalline 1:1 and 4:1 molecular compounds of 2-aminopyridine with the C10 to C18 saturated fatty acids and the 1:1 and 2:1 compounds of oleic, elaidic, alpha-eleostearic and beta-eleostearic acids. Data are also reported for 2-aminopyridine, α-eleostearic acid and β-eleostearic acid. The angle of tilt of the 1:1 saturated compounds is 42°15′. The long spacings of the 4:1 compounds indicate a unit cell length of four molecules of fatty acid and one molecule of 2-aminopyridine with an angle of tilt of 62°15′. The contribution of the 2-aminopyridine to the length of a molecule of the 1:1 compounds is ca. 6 Å, the distance between the NH2 and the CH2 in the para position. In the 4:1 and 2:1 compounds it is ca. 3 Å, the distance between the NH2 and the ring nitrogen.
Similar content being viewed by others
References
Mod, R.R., and E.L. Skau, J. Phys. Chem. 60:963 (1956).
Mod, R.R., F.C. Magne and E.L. Skau, JAOCS 36:616 (1959).
O’Connor, R.T., R.R. Mod, M.D. Murray and E.L. Skau, J. Am. Chem. Soc. 77:892 (1955).
O’Connor, R.T., R.R. Mod, M.D. Murray, F.C. Magne and E.L. Skau, Ibid. 79:5129 (1957).
Stenhagen, E., and E. von Sydow, Ark. Kemi 6:309 (1953).
Skau, E.L., JAOCS, in press.
Vand, V., W.M. Morley and T.R. Lomer, Acta Cryst. 4:324 (1951).
Wheland, G.W., “Resonance in Organic Chemistry,” John Wiley & Sons, Inc., New York, 1955.
Lutton, E.S., Oil Soap 23:265 (1946).
Müller, A., and G. Shearer, J. Chem. Soc. 123:3156 (1923).
Benedict, J.H., and B.F. Daubert, J. Am. Chem. Soc. 71:4113 (1949).
Lutton, E.S., and D.G. Kolp, Ibid. 73:2733 (1951).
Swern, D., L.P. Witnauer, S.A. Fusari and J.B. Brown, JAOCS 32:539 (1955).
Harris, J.A., R.R. Mod and E.L. Skau, Ibid. 44:737 (1967).
Author information
Authors and Affiliations
Additional information
S. Market. Nutr. Res. Div., ARS, USDA.
About this article
Cite this article
Skau, E.L., Mod, R.R., Magne, F.C. et al. The X-ray diffraction of molecular compounds of 2-aminopyridine with long chain saturated and unsaturated fatty acids. J Am Oil Chem Soc 49, 485–488 (1972). https://doi.org/10.1007/BF02582485
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02582485