1<i>H</i>,3<i>H</i>-Imidazolium (<i>R</i>,<i>S</i>)-camphor-10-sulfonate
Abdul Rahman, Mohd Basyaruddin; Omar, Emmy Maryati; Ng, Shie Ling; Kia, Reza; Fun, Hoong-Kun; Acta Crystallographica Section E 65 (2009) o224–o225; doi:10.1107/S1600536808043742

data_2220950
_publ_section_title
;
 1<i>H</i>,3<i>H</i>-Imidazolium
 (<i>R</i>,<i>S</i>)-camphor-10-sulfonate
;
_journal_coeditor_code           WW2136
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o224
_journal_page_last               o225
_journal_paper_doi               10.1107/S1600536808043742
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C3 H5 N2 +, C10 H15 O4 S -'
_chemical_formula_moiety         'C3 H5 N2 +, C10 H15 O4 S -'
_chemical_formula_sum            'C13 H20 N2 O4 S'
_chemical_formula_weight         300.37
_chemical_name_systematic
;
1<i>H</i>,3<i>H</i>-Imidazolium (2<i>R</i>,5<i>S</i>)-camphor-10-sulfonate
;
_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           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.7570(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.1362(2)
_cell_length_b                   12.0126(2)
_cell_length_c                   13.2526(3)
_cell_measurement_reflns_used    9809
_cell_measurement_temperature    100.00(10)
_cell_measurement_theta_max      38.93
_cell_measurement_theta_min      2.29
_cell_volume                     1454.34(5)
_computing_cell_refinement       'SAINT (Bruker, 2005)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'SAINT (Bruker, 2005)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material
'SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.00(10)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
;
Bruker SMART APEXII CCD area-detector
;
_diffrn_measurement_method       '\f and \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  0.0217
_diffrn_reflns_av_sigmaI/netI    0.0251
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            25973
_diffrn_reflns_theta_full        32.50
_diffrn_reflns_theta_max         32.50
_diffrn_reflns_theta_min         1.54
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.237
_exptl_absorpt_correction_T_max  0.9561
_exptl_absorpt_correction_T_min  0.8995
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>SADABS</i>; Bruker, 2005)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.372
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             640
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.528
_refine_diff_density_min         -0.339
_refine_ls_abs_structure_details 'Flack (1983), 4199 Friedel pairs'
_refine_ls_abs_structure_Flack   0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.066
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     355
_refine_ls_number_reflns         9954
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.0320
_refine_ls_R_factor_gt           0.0306
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0470P)^2^+0.3247P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0808
_refine_ls_wR_factor_ref         0.0826
_reflns_number_gt                9652
_reflns_number_total             9954
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ww2136.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               2220950
_cod_database_fobs_code          2220950