Drug–drug salts of mefenamic acidτolfenamic acid and piperazine to improve physicochemical properties for potential veterinary use
Wang, Xinyi; Xu, Shijie; Jia, Lina; Yang, Yujia; Liu, Yu; Gong, Junbo; Wu, Songgu; CrystEngComm 21 (2019) 5284–; doi:10.1039/C9CE00781D

data_7233280
_publ_section_title
;
 Drug--drug salts of mefenamic acid\tolfenamic acid and piperazine to
 improve physicochemical properties for potential veterinary use
;
_journal_issue                   35
_journal_name_full               CrystEngComm
_journal_page_first              5284
_journal_paper_doi               10.1039/C9CE00781D
_journal_volume                  21
_journal_year                    2019
_chemical_formula_moiety         'C14 H11 Cl N O2, C4 H11 N2'
_chemical_formula_sum            'C18 H22 Cl N3 O2'
_chemical_formula_weight         347.83
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_audit_block_doi                 10.5517/ccdc.csd.cc22c80r
_audit_creation_date             2018-07-09
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2019-07-01 deposited with the CCDC.    2019-07-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.39(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.827(2)
_cell_length_b                   7.5021(15)
_cell_length_c                   21.322(4)
_cell_measurement_reflns_used    4921
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      28.0349
_cell_measurement_theta_min      1.9262
_cell_volume                     1717.5(6)
_computing_cell_refinement       'crystalclear(Rigaku, 2008)'
_computing_data_collection       crystalclear
_computing_data_reduction        crystalclear
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2014)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      113.15
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Rigaku Saturn 70  CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0394
_diffrn_reflns_av_unetI/netI     0.0291
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            19754
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.914
_diffrn_reflns_theta_min         1.926
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.238
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8492
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   crystalclear
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.345
_exptl_crystal_description       prism
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.275
_refine_diff_density_min         -0.325
_refine_diff_density_rms         0.043
_refine_ls_extinction_coef       0.015(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     231
_refine_ls_number_reflns         4097
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0440
_refine_ls_R_factor_gt           0.0372
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0527P)^2^+0.3156P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0945
_refine_ls_wR_factor_ref         0.0991
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3545
_reflns_number_total             4097
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ce00781d2.cif
_cod_data_source_block           shelxl_CCDC1
_cod_depositor_comments
'Adding full bibliography for 7233278--7233281.cif.'
_cod_database_code               7233280
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.972
_shelx_estimated_absorpt_t_min   0.954
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups, All N(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Restrained distances
 N1-H1 = N3-H3A = N2-H2A = N2-H2B
 0.9 with sigma of 0.01
 H2A-H2B
 1.5 with sigma of 0.01
3.a Secondary CH2 refined with riding coordinates:
 C15(H15A,H15B), C16(H16A,H16B), C17(H17A,H17B), C18(H18A,H18B)
3.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C9(H9), C10(H10), C11(H11), C12(H12)
3.c Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C)
;
_shelx_res_checksum              75365
_olex2_submission_special_instructions 'No special instructions were received'