<i>tert</i>-Butylaminium 2-carboxy-4,5-dichlorobenzoate
Smith, Graham; Wermuth, Urs D.; Acta Crystallographica Section E 67 (2011) o2461–; doi:10.1107/S1600536811034131

data_2231437
_publ_section_title
;
 <i>tert</i>-Butylaminium 2-carboxy-4,5-dichlorobenzoate
;
_journal_coeditor_code           BT5620
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2461
_journal_paper_doi               10.1107/S1600536811034131
_journal_volume                  67
_journal_year                    2011
_chemical_formula_iupac          'C4 H12 N +, C8 H3 Cl2 O4 -'
_chemical_formula_moiety         'C4 H12 N +, C8 H3 Cl2 O4, C4 H12 N -'
_chemical_formula_sum            'C12 H15 Cl2 N O4'
_chemical_formula_weight         308.15
_chemical_name_common
'<i>t</i>-butylaminium hydrogen 4,5-dichlorophthalate'
_chemical_name_systematic
;
<i>tert</i>-Butylaminium 2-carboxy-4,5-dichlorobenzoate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 96.784(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.1778(2)
_cell_length_b                   12.7158(4)
_cell_length_c                   17.7125(7)
_cell_measurement_reflns_used    4272
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      28.77
_cell_measurement_theta_min      3.31
_cell_volume                     1381.68(8)
_computing_cell_refinement       'CrysAlis PRO (Oxford Diffraction, 2010)'
_computing_data_collection       'CrysAlis PRO (Oxford Diffraction, 2010)'
_computing_data_reduction        'CrysAlis PRO (Oxford Diffraction, 2010)'
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  'PLATON (Spek, 2009)'
_computing_structure_refinement
'SHELXL97 (Sheldrick, 2008) within WinGX (Farrugia, 1999)'
_computing_structure_solution    'SIR92 (Altomare <i>et al.</i>, 1994)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector_area_resol_mean 16.077
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type
'Oxford Diffraction Gemini-S CCD-detector diffractometer'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0272
_diffrn_reflns_av_sigmaI/netI    0.0282
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            8677
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.39
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.479
_exptl_absorpt_correction_T_max  0.990
_exptl_absorpt_correction_T_min  0.977
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrysAlis PRO; Oxford Diffraction, 2010)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.481
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             640
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.247
_refine_diff_density_min         -0.210
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.904
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     188
_refine_ls_number_reflns         2719
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.904
_refine_ls_R_factor_all          0.0408
_refine_ls_R_factor_gt           0.0329
_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^)+(0.0608P)^2^+0.4558P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0886
_refine_ls_wR_factor_ref         0.0943
_reflns_number_gt                2307
_reflns_number_total             2719
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bt5620.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2231437
_cod_database_fobs_code          2231437