<small>L</small>-Tyrosine isopropyl ester
Nuñez-Dallos, Nelson; Wurst, Klaus; Quevedo, Rodolfo; Acta Crystallographica Section E 68 (2012) o3173–; doi:10.1107/S1600536812042377

data_2236402
_publ_section_title
;
 <small>L</small>-Tyrosine isopropyl ester
;
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3173
_journal_paper_doi               10.1107/S1600536812042377
_journal_volume                  68
_journal_year                    2012
_chemical_formula_iupac          'C12 H17 N O3'
_chemical_formula_moiety         'C12 H17 N O3'
_chemical_formula_sum            'C12 H17 N O3'
_chemical_formula_weight         223.27
_chemical_name_common
;
<i>L</i>-Tyrosine isopropyl ester
;
_chemical_name_systematic
;
Isopropyl (2<i>S</i>)-2-amino-3-(4-hydroxyphenyl)propanoate
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.45390(10)
_cell_length_b                   14.0521(3)
_cell_length_c                   16.5163(4)
_cell_measurement_reflns_used    13069
_cell_measurement_temperature    233(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      1.0
_cell_volume                     1265.79(5)
_computing_cell_refinement       'SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1998)'
_computing_data_reduction
'DENZO and SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    '<i>Mercury</i> (Macrae <i>et al.</i>, 2008)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      233(2)
_diffrn_detector_area_resol_mean 9.1
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0201
_diffrn_reflns_av_sigmaI/netI    0.0133
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            8375
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.47
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.172
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             480
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.170
_refine_diff_density_min         -0.152
_refine_ls_extinction_coef       0.059(14)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     158
_refine_ls_number_reflns         1318
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0377
_refine_ls_R_factor_gt           0.0364
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0540P)^2^+0.2704P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0979
_refine_ls_wR_factor_ref         0.0991
_reflns_number_gt                1271
_reflns_number_total             1318
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            is5203.cif
_cod_data_source_block           I
_cod_database_code               2236402
_cod_database_fobs_code          2236402