TY - JOUR

T1 - DL-norleucine

T2 - redetermination of structure and observations with synchrotron radiation Laue diffraction on heating towards transformation

AU - Harding, MM

AU - Kariuki, BM

AU - Williams, L

AU - Anwar, J

PY - 1995/12/1

Y1 - 1995/12/1

N2 - Redetermination of the structure of DL-norleucine (2-aminohexanoic acid), C6H13NO2, has given more accurate geometrical information than the early work of Mathieson [Acta Cryst. (1953), 6, 399-403]. Synchrotron radiation Laue diffraction patterns recorded over a range of temperatures have shown (a) the presence of streaks, indicating disorder in the stacking of layers within the crystal at room temperature, (b) complete or almost complete disappearance of these streaks when the crystal is heated to ca 373 K, indicating annealing of the crystal, and (c) loss of single crystal characteristics above 390 K so that it was not possible to record diffraction data for the high-temperature form proposed by Mathieson.

AB - Redetermination of the structure of DL-norleucine (2-aminohexanoic acid), C6H13NO2, has given more accurate geometrical information than the early work of Mathieson [Acta Cryst. (1953), 6, 399-403]. Synchrotron radiation Laue diffraction patterns recorded over a range of temperatures have shown (a) the presence of streaks, indicating disorder in the stacking of layers within the crystal at room temperature, (b) complete or almost complete disappearance of these streaks when the crystal is heated to ca 373 K, indicating annealing of the crystal, and (c) loss of single crystal characteristics above 390 K so that it was not possible to record diffraction data for the high-temperature form proposed by Mathieson.

KW - CRYSTALS

KW - TRANSITIONS

U2 - 10.1107/S0108768195006331

DO - 10.1107/S0108768195006331

M3 - Journal article

VL - 51

SP - 1059

EP - 1062

JO - Acta Crystallographica Section B: Structural Science

JF - Acta Crystallographica Section B: Structural Science

SN - 0108-7681

ER -