Pseudopolymorphism of <i>N</i>-acetyl-<small>L</small>-phenylalanine methyl ester
Janik, Alicja; Jarocha, Monika; Stadnicka, Katarzyna; Acta Crystallographica Section B 64 (2008) 223–229; doi:10.1107/S010876810800219X

data_2104050
_publ_section_title
;
 Pseudopolymorphism of <i>N</i>-acetyl-<small>L</small>-phenylalanine
 methyl ester
;
_journal_coeditor_code           BM5052
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              223
_journal_page_last               229
_journal_paper_doi               10.1107/S010876810800219X
_journal_volume                  64
_journal_year                    2008
_chemical_formula_moiety         'C12 H15 N O3'
_chemical_formula_sum            'C12 H15 N O3'
_chemical_formula_weight         221.25
_chemical_name_systematic
;
N-Acetyl-L-phenylalanine methyl 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_primary     direct
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.9488(2)
_cell_length_b                   8.6359(6)
_cell_length_c                   27.6622(10)
_cell_measurement_reflns_used    2846
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.034
_cell_measurement_theta_min      0.998
_cell_volume                     1182.21(10)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1997)'
_computing_data_reduction
'HKL DENZO and Scalepack (Otwinowski & Minor, 1997)'
_computing_molecular_graphics
;
 PLATON (Spek, 2003); ORTEP3 for Windows (Farrugia, 1997); MERCURY (Version
 1.4; Macrae et al., 2006)
;
_computing_publication_material  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       '\w scans at \c = 55 deg'
_diffrn_radiation_monochromator  'horizontally mounted graphite crystal'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0278
_diffrn_reflns_av_sigmaI/netI    0.0383
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            8592
_diffrn_reflns_theta_full        30.07
_diffrn_reflns_theta_max         30.07
_diffrn_reflns_theta_min         3.23
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9858
_exptl_absorpt_correction_T_min  0.9719
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'HKL DENZO and Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.243
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             472
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.199
_refine_diff_density_min         -0.204
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     150
_refine_ls_number_reflns         2019
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0506
_refine_ls_R_factor_gt           0.0385
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0476P)^2^+0.1338P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0908
_refine_ls_wR_factor_ref         0.0959
_reflns_number_gt                1736
_reflns_number_total             2019
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            bm5052.cif
_cod_data_source_block           Ib
_cod_database_code               2104050