Structure cristalline de la L-leucyl-L-leucyl-L-tyrosine chlorhydraté
Résumé
C21H34N3O5+.Cl-, Mr = 444.0, orthorhombic, P212121, a = 26.074 (5), b = 17.591 (4), c = 5.224 (2) Å, V = 2396.1 (10) ų, Z = 4, Cu Kα, λ = 1.5418 Å, µ = 1.71 mm-1, F(000) = 952, Dx = 1.231 Mg m-3, room temperature, final R = 0.080 and wR = 0.070 for all 2439 reflections [(sinθ)/λ > 0.03 Å-1]. The peptide groups are planar; torsion angles (-101 and -88°) indicate a roughly helical structure. The peptide bonds have a trans conformation. The crystal structure is stabilized by a network of hydrogen bonds.
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