High Solubility Piperazine Salts of the Nonsteroidal Anti-Inflammatory Drug (NSAID) Meclofenamic Acid
Sanphui, Palash; Bolla, Geetha; Nangia, Ashwini; Crystal Growth & Design 12 (2012) 2023–; doi:10.1021/cg300002p

data_4505964
_publ_section_title
;
 High Solubility Piperazine Salts of the Nonsteroidal Anti-Inflammatory
 Drug (NSAID) Meclofenamic Acid
;
_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              2023
_journal_paper_doi               10.1021/cg300002p
_journal_volume                  12
_journal_year                    2012
_chemical_formula_sum            'C18 H21 Cl2 N3 O2'
_chemical_formula_weight         382.28
_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                 102.347(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.3805(13)
_cell_length_b                   8.3717(5)
_cell_length_c                   14.4609(11)
_cell_measurement_reflns_used    2137
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.3130
_cell_measurement_theta_min      2.7405
_cell_volume                     1937.2(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Eos, Gemini'
_diffrn_measurement_method       '\w scans'
_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  0.0417
_diffrn_reflns_av_sigmaI/netI    0.0833
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            8452
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.75
_exptl_absorpt_coefficient_mu    0.351
_exptl_absorpt_correction_T_max  0.9460
_exptl_absorpt_correction_T_min  0.9205
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.311
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.321
_refine_diff_density_min         -0.292
_refine_diff_density_rms         0.040
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.933
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     243
_refine_ls_number_reflns         3956
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.933
_refine_ls_R_factor_all          0.1676
_refine_ls_R_factor_gt           0.0641
_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^)+(0.0856P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1547
_refine_ls_wR_factor_ref         0.1851
_reflns_number_gt                1574
_reflns_number_total             3956
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg300002p_si_009.cif
_cod_data_source_block           MFA-PPZ-M
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4505964