High-Pressure Crystallization and Structural Transformations in CompressedR,S-Ibuprofen
Ostrowska, Kinga; Kropidłowska, Magdalena; Katrusiak, Andrzej; Crystal Growth & Design 15 (2015) 1512–; doi:10.1021/cg5018888

data_4512753
_publ_section_title
;
 High-Pressure Crystallization and Structural Transformations in
 CompressedR,S-Ibuprofen
;
_journal_issue                   3
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1512
_journal_paper_doi               10.1021/cg5018888
_journal_volume                  15
_journal_year                    2015
_chemical_formula_moiety         'C13 H18 O2'
_chemical_formula_sum            'C13 H18 O2'
_chemical_formula_weight         206.27
_chemical_melting_point          349
_chemical_name_common
;
(R,S)-2-(4-(2-methylpropyl)phenyl)propanoic acid
;
_chemical_name_systematic
;
 (R,S)-ibuprofen
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 99.525(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.6050(6)
_cell_length_b                   7.8721(3)
_cell_length_c                   10.6507(4)
_cell_measurement_reflns_used    2342
_cell_measurement_temperature    250(2)
_cell_measurement_theta_max      73.74
_cell_measurement_theta_min      3.07
_cell_volume                     1207.65(8)
_computing_cell_refinement       'CrysAlis (Oxford Diffraction, 2002)'
_computing_data_collection       'CrysAlis (Oxford Diffraction, 2002)'
_computing_data_reduction        'CrysAlis (Oxford Diffraction, 2002)'
_computing_molecular_graphics
;X-Seed (Barbour, 2001) 
and POV-Ray (Persistence of Vision, 2004)
Mercury (2008)
;
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      250(2)
_diffrn_measured_fraction_theta_full 0.957
_diffrn_measured_fraction_theta_max 0.957
_diffrn_measurement_device_type  'multiwire proportional'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0234
_diffrn_reflns_av_sigmaI/netI    0.0208
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            8408
_diffrn_reflns_theta_full        73.74
_diffrn_reflns_theta_max         73.74
_diffrn_reflns_theta_min         3.07
_exptl_absorpt_coefficient_mu    0.592
_exptl_absorpt_correction_T_max  0.971
_exptl_absorpt_correction_T_min  0.931
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
Correction for absorption was made using XEMP (SHELXTL, 
Sheldrick (1990)).
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.135
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             448
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.153
_refine_diff_density_min         -0.146
_refine_diff_density_rms         0.035
_refine_ls_extinction_coef       0.0025(7)
_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   1.041
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         2342
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0589
_refine_ls_R_factor_gt           0.0484
_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^)+(0.0597P)^2^+0.3488P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1283
_refine_ls_wR_factor_ref         0.1371
_reflns_number_gt                1905
_reflns_number_total             2342
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg5018888_si_002.cif
_cod_data_source_block           ibuprofen_250
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

 Adding full bibliography for 4512740--4512754.cif.
;
_cod_original_sg_symbol_Hall     '-P 2y bc'
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4512753