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Figure 2
(a) The crystal packing of (I)[link], viewed along the monoclinic b axis (top) and the c axis (bottom). The minor side-chain conformation is not shown, and H atoms bonded to C have been omitted for clarity. L-Met and D-Met mol­ecules are shown with light- and dark-grey C atoms, respectively. The blue arrows show the directions of C2—N bond vectors within each of the two sheets constituting a hydrogen-bonded layer. (b) Corresponding views for β-DL-Met at 105 K (Alagar et al., 2005BB1).

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