2-Mercaptoimidazolium halides: structural diversity, stability and spontaneous racemisation
Braun, Doris Elfriede; Lampl, Martin; Kahlenberg, Volker; Wurst, Klaus; Schottenberger, Herwig; Hummel, Michael; Griesser, Ulrich J.; CrystEngComm  (2020) –; doi:10.1039/D0CE00774A

data_7241088
_publ_section_title
;
 2-Mercaptoimidazolium halides: structural diversity, stability and
 spontaneous racemisation
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/D0CE00774A
_journal_year                    2020
_chemical_formula_moiety         'C7 H11 N2 O S, Br'
_chemical_formula_sum            'C7 H11 Br N2 O S'
_chemical_formula_weight         251.15
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.3
_audit_creation_date             2014-06-19T18:41:47-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2020-05-27 deposited with the CCDC.	2020-08-21 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 111.2210(10)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   11.2359(2)
_cell_length_b                   14.9020(2)
_cell_length_c                   12.3361(3)
_cell_measurement_reflns_used    8910
_cell_measurement_temperature    233(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      0.998
_cell_measurement_wavelength     0.71073
_cell_volume                     1925.46(6)
_computing_molecular_graphics    'Ortep for Windows (Farrugia, 2012)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      233(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       'phi and omega-scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0854
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            6560
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        26
_diffrn_reflns_theta_max         27.468
_diffrn_reflns_theta_min         2.377
_exptl_absorpt_coefficient_mu    4.442
_exptl_absorpt_correction_T_max  0.349
_exptl_absorpt_correction_T_min  0.270
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(SORTAV; Blessing, 1995)
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.733
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1008
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: methanol'
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.381
_refine_diff_density_min         -0.551
_refine_diff_density_rms         0.074
_refine_ls_extinction_coef       0.0033(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.083
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     115
_refine_ls_number_reflns         2190
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.032
_refine_ls_R_factor_gt           0.0289
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0131P)^2^+1.4495P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0737
_refine_ls_wR_factor_ref         0.0762
_reflns_number_gt                2006
_reflns_number_total             2190
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0ce00774a2.cif
_cod_data_source_block           shelx
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7241088