<small>L</small>-Tyrosine <i>n</i>-butyl ester
Qian, Shao-Song; Jiao, Qing-Cai; Zhu, Hai-Liang; Tiekink, Edward R. T.; Acta Crystallographica Section E 62 (2006) o882–o884; doi:10.1107/S1600536806003606

data_2208394
_publ_section_title
;
 <small>L</small>-Tyrosine <i>n</i>-butyl ester
;
_journal_coeditor_code           NG6285
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o882
_journal_page_last               o884
_journal_paper_doi               10.1107/S1600536806003606
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C13 H19 N O3'
_chemical_formula_moiety         'C13 H19 N O3'
_chemical_formula_sum            'C13 H19 N O3'
_chemical_formula_weight         237.29
_chemical_name_systematic
;
L-Tyrosine n-butyl ester
;
_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
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.5380(11)
_cell_length_b                   14.508(3)
_cell_length_c                   15.908(3)
_cell_measurement_reflns_used    650
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.8
_cell_measurement_theta_min      5.6
_cell_volume                     1278.1(4)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Siemens SMART CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.027
_diffrn_reflns_av_sigmaI/netI    0.046
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            3802
_diffrn_reflns_theta_full        25.0
_diffrn_reflns_theta_max         25.0
_diffrn_reflns_theta_min         1.9
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.233
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             512
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.23
_refine_diff_density_min         -0.19
_refine_ls_extinction_coef       0.029(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.08
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     155
_refine_ls_number_reflns         1341
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.07
_refine_ls_R_factor_all          0.061
_refine_ls_R_factor_gt           0.050
_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^)+(0.0813P)^2^+0.1625P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.125
_refine_ls_wR_factor_ref         0.133
_reflns_number_gt                1794
_reflns_number_total             2253
_reflns_threshold_expression     I>\s(I)
_cod_data_source_file            ng6285.cif
_cod_data_source_block           I
_cod_database_code               2208394
_cod_database_fobs_code          2208394