Are meloxicam dimers really the structure-forming units in the ‘meloxicam–carboxylic acid’ co-crystals family? Relation between crystal structures and dissolution behaviour
Tumanov, Nikolay A.; Myz, Svetlana A.; Shakhtshneider, Tatyana P.; Boldyreva, Elena V.; CrystEngComm 14 (2012) 305–; doi:10.1039/c1ce05902e

data_7207067
_publ_section_title
;
 Are meloxicam dimers really the structure-forming units in the
 &#x2018;meloxicam--carboxylic acid&#x2019; co-crystals family? Relation
 between crystal structures and dissolution behaviour
;
_journal_issue                   1
_journal_name_full               CrystEngComm
_journal_page_first              305
_journal_paper_doi               10.1039/c1ce05902e
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C14 H13 N3 O4 S2, 0.5(C6 H10 O4)'
_chemical_formula_sum            'C17 H18 N3 O6 S2'
_chemical_formula_weight         424.46
_chemical_name_common
;
4-Hydroxy-2-methyl-N-(5-methyl-1,3-thiazol-2-yl)-2H-1,2-
benzothiazine-3-carboxamide 1,1-dioxide adipic acid
;
_chemical_name_systematic
;
4-Hydroxy-2-methyl-N-(5-methyl-1,3-thiazol-2-yl)-2H-1,2-benzothiazine-3-
carboxamide 1,1-dioxide adipic acid
;
_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           SHELXL-97
_cell_angle_alpha                80.019(10)
_cell_angle_beta                 72.499(10)
_cell_angle_gamma                73.133(10)
_cell_formula_units_Z            2
_cell_length_a                   8.3589(9)
_cell_length_b                   10.6257(12)
_cell_length_c                   11.7957(13)
_cell_measurement_reflns_used    2634
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.1725
_cell_measurement_theta_min      3.5757
_cell_volume                     951.94(19)
_computing_cell_refinement       'CrysAlis RED (Oxford Diffraction, 2008)'
_computing_data_collection       'CrysAlis CCD (Oxford Diffraction, 2008)'
_computing_data_reduction        'CrysAlis RED (Oxford Diffraction, 2008)'
_computing_molecular_graphics    'Mercury (Macrae <i>et al.</i>, 2006)'
_computing_publication_material
;
publCIF (Westrip., 2008),
enCIFer (Allen et al., 2004).
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 10.3457
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Oxford Diffraction Gemini Ultra R CCD'
_diffrn_measurement_method       \w
_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  0.0516
_diffrn_reflns_av_sigmaI/netI    0.0822
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            11767
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         3.58
_exptl_absorpt_coefficient_mu    0.320
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.89725
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.481
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             442
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.234
_refine_diff_density_min         -0.251
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.855
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     309
_refine_ls_number_reflns         3892
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.855
_refine_ls_R_factor_all          0.0966
_refine_ls_R_factor_gt           0.0440
_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^)+(0.0348P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0746
_refine_ls_wR_factor_ref         0.0846
_reflns_number_gt                2218
_reflns_number_total             3892
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c1ce05902e.txt
_cod_data_source_block           mel_adip
_cod_original_cell_volume        951.94(18)
_cod_database_code               7207067