Plastically bendable pregabalin multi-component systems with improved tabletability and compressibility
Khandavilli, U. B. Rao; Yousuf, Mustafa; Schaller, Barbara E.; Steendam, René R. E.; Keshavarz, Leila; McArdle, Patrick; Frawley, Patrick J.; CrystEngComm 22 (2020) 412–415; doi:10.1039/C9CE01625B

data_7239706
_publ_section_title
;
 Plastically bendable pregabalin multi-component systems with improved
 tabletability and compressibility
;
_journal_issue                   3
_journal_name_full               CrystEngComm
_journal_page_first              412
_journal_page_last               415
_journal_paper_doi               10.1039/C9CE01625B
_journal_volume                  22
_journal_year                    2020
_chemical_absolute_configuration unk
_chemical_formula_sum            'C18 H36 N2 O8'
_chemical_formula_weight         408.49
_space_group_crystal_system      monoclinic
_space_group_IT_number           5
_space_group_name_Hall           'C 2y'
_space_group_name_H-M_alt        'C 1 2 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2019-11-22 deposited with the CCDC.	2019-12-10 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.780(9)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   11.5328(10)
_cell_length_b                   6.1123(5)
_cell_length_c                   16.0138(14)
_cell_measurement_reflns_used    1292
_cell_measurement_temperature    150.0(1)
_cell_measurement_theta_max      29.1780
_cell_measurement_theta_min      4.3600
_cell_volume                     1112.44(17)
_computing_cell_refinement       'crysalispro 1.171.40.14e (rigaku od, 2018)'
_computing_data_collection       'crysalispro 1.171.40.14e (rigaku od, 2018)'
_computing_data_reduction        'crysalispro 1.171.40.14e (rigaku od, 2018)'
_computing_molecular_graphics
'ORTEX - P. McArdle, J.Appl.Cryst.,1995,28,65-65.'
_computing_publication_material
'Oscail - P. McArdle, J.Appl.Cryst.,2017,50,320-326.'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      150.0(1)
_diffrn_detector_area_resol_mean 16.1048
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.872
_diffrn_measurement_device_type  'xcalibur, sapphire3'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0269
_diffrn_reflns_av_unetI/netI     0.0391
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.872
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            2690
_diffrn_reflns_point_group_measured_fraction_full 0.745
_diffrn_reflns_point_group_measured_fraction_max 0.617
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.069
_diffrn_reflns_theta_min         3.599
_diffrn_source                   'fine-focus sealed x-ray tube'
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.74806
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
crysalispro 1.171.40.14e (rigaku oxford diffraction, 2018)
empirical absorption correction using spherical harmonics,
 implemented in scale3 abspack scaling algorithm.
;
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.219
_exptl_crystal_description       Parallelepiped
_exptl_crystal_F_000             444
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.252
_refine_diff_density_min         -0.228
_refine_diff_density_rms         0.049
_refine_ls_abs_structure_details
;
 Flack x determined using 388 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -1.5(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     131
_refine_ls_number_reflns         1838
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.0427
_refine_ls_R_factor_gt           0.0398
_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^)+(0.0575P)^2^+0.2355P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0997
_refine_ls_wR_factor_ref         0.1026
_reflns_Friedel_coverage         0.301
_reflns_Friedel_fraction_full    0.435
_reflns_Friedel_fraction_max     0.313
_reflns_number_gt                1720
_reflns_number_total             1838
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ce01625b2.cif
_cod_data_source_block           oxal_lt
_cod_depositor_comments
;Adding full bibliography for 7239704--7239707.cif.

 Adding full bibliography for 7239704--7239707.cif.
;
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               7239706
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.954
_shelx_estimated_absorpt_t_max   0.981
_shelx_res_checksum              25457