Crystal Structure of Ethylene Di-11-bromoundecanoate

Science  19 May 1972:
Vol. 176, Issue 4036, pp. 806-808
DOI: 10.1126/science.176.4036.806


Ethylene di-11-bromoundecanoate, C24H44Br2O4, was synthesized as a model for the hydrophobic moiety of saturated phospholipids. The crystals are monoclinic, space group P21/a, with two molecules per unit cell. Unlike folded configurations proposed for phospholipids in biological membranes, the hydrocarbon chains of this diester are fully extended in the crystalline state.