Racemic dipeptide glycyl-DL-leucine at 120 K.
The structure of glycyl-DL-leucine, C(8)H(16)N(2)O(3), has been determined at 120 K by single-crystal X-ray diffraction. In addition to three N-H.O-type hydrogen bonds of the positively charged RNH(3)(+) group of the zwitterionic molecule, an intermolecular N-H. O contact exists between the peptide bond and the carboxylate group. Four hydrogen-bond cycles were identified, giving a complex pattern.
Bombicz
P
P
Institut für Chemie, Kristallographie, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany.
Dittrich
B
B
Strumpel
M
M
Nabein
H P
HP
Luger
P
P
D018360:Crystallography, X-Ray; D004151:Dipeptides / Q000737:chemistry*; D006860:Hydrogen Bonding; D008968:Molecular Conformation; D015394:Molecular Structure; D013237:Stereoisomerism
D004151:Dipeptides; C015905:glycylleucine