Acta Crystallographica Section B

Structural Science

Volume 58, Part 1 (February 2002)

research papers

Acta Cryst. (2002). B58, 134-139 [ doi:10.1107/S0108768101016330 ]

Structure of C₁₅-, C₁₇- and C₁₉-mono-acid -triacylglycerols

R. B. Helmholdt, R. Peschar and H. Schenk

Abstract: The crystal structures of [beta] -1,2,3-tris(pentadecanoyl)glycerol ( [beta] -C₁₅C₁₅C₁₅), [beta] -1,2,3-tris(heptadecanoyl)glycerol ( [beta] -C₁₇C₁₇C₁₇) and [beta] -1,2,3-tris(nonadecanoyl)glycerol ( [beta] -C₁₉C₁₉C₁₉) have been determined from high-resolution X-ray powder diffraction data. Grid search and Rietveld refinement have been used to determine and refine the structures, respectively. As in [beta] -1,2,3-tris(tridecanoyl)glycerol ( [beta] -C₁₃C₁₃C₁₃) and the even-numbered mono-acid triacylglycerols, all three odd-numbered monoacid triacylglycerols crystallize in space group P $\bar 1$ with Z = 2 in an asymmetric tuning-fork conformation and have a lateral acyl chain packing resulting in a layered structure.

Keywords: triacylglycerols; X-ray powder diffraction.


	Rietveld powder data file (CIF format) (458.0 kbytes) Contains datablocks global, C15C15C15, profile

	Rietveld powder data file (CIF format) (461.5 kbytes) Contains datablocks global, C17C17C17, profile

	Rietveld powder data file (CIF format) (463.9 kbytes) Contains datablocks global, C19C19C19, profile

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