Zolmitriptan oxalate and zolmitriptan camphorsulfonate: the first structural study of salt complexes of the antimigraine drug zolmitriptan
Sridhar, Balasubramanian; Ravikumar, Krishnan; Hariharakrishnan, Venkatasubramanian; Acta Crystallographica Section C 69 (2013) 1186–1191; doi:10.1107/S0108270113024323

data_2019163
_publ_section_title
;
 Zolmitriptan oxalate and zolmitriptan camphorsulfonate: the first
 structural study of salt complexes of the antimigraine drug zolmitriptan
;
_journal_coeditor_code           CU3036
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1186
_journal_page_last               1191
_journal_paper_doi               10.1107/S0108270113024323
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C16 H22 N3 O2 + , C2 H O4 -'
_chemical_formula_moiety         'C16 H22 N3 O2 +, C2 H O4 -'
_chemical_formula_sum            'C18 H23 N3 O6'
_chemical_formula_weight         377.39
_chemical_name_common
;
Zolmitriptan hydrogen oxalate
;
_chemical_name_systematic
'Dimethyl(2-{5-[(2-oxo-1,3-oxazolidin-4-yl)methyl]-1<i>H</i>-indol-3-yl}ethyl)azanium hydrogen oxalate'
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 92.2200(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.5944(4)
_cell_length_b                   17.9908(14)
_cell_length_c                   18.3844(15)
_cell_measurement_reflns_used    6021
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      27.78
_cell_measurement_theta_min      2.22
_cell_volume                     1849.0(2)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        'SAINT (Bruker, 2001)'
_computing_molecular_graphics    'DIAMOND (Brandenburg & Putz, 2005)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device       'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area-detector'
_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  0.0184
_diffrn_reflns_av_sigmaI/netI    0.0219
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            21294
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.99
_diffrn_reflns_theta_min         1.11
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.103
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.356
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.283
_refine_diff_density_min         -0.198
_refine_ls_abs_structure_details
'Flack & Bernardinelli (2000), with 4320 Friedel pairs'
_refine_ls_abs_structure_Flack   -0.4(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     523
_refine_ls_number_reflns         8509
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0381
_refine_ls_R_factor_gt           0.0356
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0594P)^2^+0.1495P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0965
_refine_ls_wR_factor_ref         0.0991
_reflns_number_gt                7991
_reflns_number_total             8509
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cu3036.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               2019163