Latest documents http://publikationen.ub.uni-frankfurt.de/index/index/ Fri, 29 Jun 2012 09:59:54 +0200 Fri, 29 Jun 2012 09:59:54 +0200 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/24584 Large crystals of the methyl ester of the N-a-benzyloxycarbonyl protected Ala-Phe dipeptide (Z-AF-OMe) were obtained after the very slow evaporation of a solution of the corresponding carboxylic acid (Z-AF-OH) in methanol containing an excess of HCl. The structure was confirmed by single crystal X-ray diffraction data. It crystallizes in the orthorhombic space group P212121 with unit cell dimensions a = 5.0655(6) Å, b = 8.4614(8) Å, c = 46.856(5) Å, V = 2008.3(4) Å3, Z = 4. In the crystal, the molecules form hydrogen bonded chains running along the a axis of the unit cell. Other secondary interactions are also discussed. Ignacio Alfonso; Michael Bolte; M. Isabel Burguete; Santiago V. Luis article http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/24584 Fri, 29 Jun 2012 09:59:54 +0200