Similarity in structures of racemic and enantiomeric ibuprofen sodium dihydrates
Zhang, Yue-Gang; Grant, David J. W.; Acta Crystallographica Section C 61 (2005) m435–m438; doi:10.1107/S0108270105024807

data_2015082
_publ_section_title
;
 Similarity in structures of racemic and enantiomeric ibuprofen sodium
 dihydrates
;
_journal_coeditor_code           SQ1215
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              m435
_journal_page_last               m438
_journal_paper_doi               10.1107/S0108270105024807
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'Na + , C13 H17 O2 - , 2H2 O'
_chemical_formula_moiety         'Na + , C13 H17 O2 - , 2H2 O'
_chemical_formula_sum            'C13 H21 Na O4'
_chemical_formula_weight         264.29
_chemical_name_common            'R/S-ibuprofen sodium dihydrate'
_chemical_name_systematic
;
sodium (RS)-\a-methyl [4-(isobutyl)phenyl]acetate dihydrate
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                83.4570(10)
_cell_angle_beta                 89.2410(10)
_cell_angle_gamma                63.1540(10)
_cell_formula_units_Z            2
_cell_length_a                   5.7396(4)
_cell_length_b                   6.0284(4)
_cell_length_c                   23.8301(17)
_cell_measurement_reflns_used    2507
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.0
_cell_measurement_theta_min      1.8
_cell_volume                     730.20(9)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        'SAINT  (Bruker, 2003)'
_computing_molecular_graphics    'SHELXL97 and SHELXTL (Bruker, 2000)'
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD area-detector'
_diffrn_measurement_method       'oscillation photo around \w at four \f'
_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  0.0366
_diffrn_reflns_av_sigmaI/netI    0.0368
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            8727
_diffrn_reflns_theta_full        27.56
_diffrn_reflns_theta_max         27.56
_diffrn_reflns_theta_min         1.72
_exptl_absorpt_coefficient_mu    0.112
_exptl_absorpt_correction_T_max  1.0
_exptl_absorpt_correction_T_min  0.791
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'based on \DI (SADABS; Bruker, 2000)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.202
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             284
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.492
_refine_diff_density_min         -0.426
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     185
_refine_ls_number_reflns         3317
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0616
_refine_ls_R_factor_gt           0.0475
_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^)+(0.0626P)^2^+0.4067P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1244
_refine_ls_wR_factor_ref         0.1351
_reflns_number_gt                2610
_reflns_number_total             3317
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sq1215.cif
_cod_data_source_block           I
_cod_database_code               2015082
_cod_database_fobs_code          2015082