data_2005173
_journal_name_full  'Acta Crystallographica'
_journal_year      1996
_journal_volume    'C52'
_journal_page_first     1761
_journal_page_last     1764
_publ_section_title
;
DL-Norleucine, \b Form at 120 K
;
_chemical_formula_sum     'C6 H13 N O2'
_chemical_formula_weight     131.17
_symmetry_cell_setting    'Monoclinic'
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, y, -z+1/2'
'x+1/2, y+1/2, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y, z-1/2'
'-x+1/2, -y+1/2, -z'
'x+1/2, -y+1/2, z-1/2'
_symmetry_space_group_name_H-M     'C 2/c'
_cell_length_a     31.067(5)
_cell_length_b     4.7170(10)
_cell_length_c     9.851(2)
_cell_angle_alpha     90.00
_cell_angle_beta     91.37(2)
_cell_angle_gamma     90.00
_cell_volume     1443.2(5)
_cell_formula_units_Z     8
_exptl_crystal_density_diffrn     1.207
_cell_measurement_temperature     120(2)
loop_
_atom_site_label
_atom_site_occupancy
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
O1 1  .71578(2)  -.0773(2)  .80067(8)  .0186(2)
O2 1  .68537(3)  .2043(2)  .95401(7)  .0215(2)
N1 1  .70227(3)  .2976(2)  .60017(8)  .0163(2)
H1 1  .7315(6)  .324(4)    .6287(17)  .040(5)
H2 1  .6948(5)  .442(4)    .5390(15)  .028(4)
H3 1  .7000(5)  .124(4)    .5565(16)  .032(4)
C1 1  .69415(3)  .1333(2)  .83429(9)  .0146(2)
C2 1  .67399(3)  .3110(2)  .71972(9)  .0147(2)
H4 1  .67150(5)  .503(3)    .7490(4)  .018
C3 1  .62927(3)  .1939(2)  .68403(10)  .0185(2)
H5 1  .63173(4)  -.012(2)    .6697(2)  .022
H6 1  .6106(2)  .2234(4)  .7624(8)  .022
C4 1  .60724(3)  .3240(3)  .55874(11)  .0222(2)
H7 1  .60533(4)  .532(2)    .5711(2)  .027
H8 1  .6251(2)  .2875(5)  .4785(9)  .027
C5 1  .56239(4)  .2063(3)  .53200(13)  .0286(2)
H9 1  .5440(2)  .2582(6)  .6077(9)  .034
H10 1  .56396(4)  -.001(2)    .52867(13)  .034
C6 1  .54177(4)  .3139(4)  .40024(14)  .0354(3)
H11 1  .5128(3)  .230(2)    .3880(6)  .055(3)
H12 1  .5598(3)  .259(2)    .3232(9)  .055(3)
H13 1  .5393(3)  .523(2)    .4039(5)  .055(3)