A dime a dozen: common structural attributes of 1,2-dimethylimidazolium halide ionic liquids
Scheuren, Marija; Sommers, Rachel C.; Boucher, Mairead; Carlos, Christiane; Hillesheim, Patrick C.; New Journal of Chemistry 48 (2024) 13069–13079; doi:10.1039/D4NJ01422G

data_7063293
_publ_section_title
;
 A dime a dozen: common structural attributes of 1,2-dimethylimidazolium
 halide ionic liquids
;
_journal_issue                   29
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              13069
_journal_page_last               13079
_journal_paper_doi               10.1039/D4NJ01422G
_journal_volume                  48
_journal_year                    2024
_chemical_formula_moiety         'Br, C7 H13 N2'
_chemical_formula_sum            'C7 H13 Br N2'
_chemical_formula_weight         205.10
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_date             2024-03-25
_audit_creation_method
;
Olex2 1.5
(compiled 2024.02.16 svn.r378c4104 for OlexSys, GUI svn.r6928)
;
_audit_update_record
;
2024-03-26 deposited with the CCDC.	2024-07-01 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 101.531(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.8003(4)
_cell_length_b                   17.1874(9)
_cell_length_c                   7.9486(4)
_cell_measurement_reflns_used    6319
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.91
_cell_measurement_theta_min      2.87
_cell_volume                     910.28(9)
_computing_cell_refinement       'SAINT V8.40A (Bruker, 2019)'
_computing_data_collection       'Apex3 v2019.1-0 (Bruker, 2019)'
_computing_data_reduction        'SAINT V8.40A (Bruker, 2019)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2019/3 (Sheldrick, 2015)'
_computing_structure_solution    'XT  (Sheldrick, 2015)'
_diffrn_ambient_temperature      150.00
_diffrn_detector                 'Bruker PhotonII CPAD'
_diffrn_detector_area_resol_mean 7.4074
_diffrn_detector_type
;
charge-integrating pixel array detector (CPAD)
;
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type
;
Bruker AXS D8 Quest Eco diffractometer with PhotonII charge-integrating pixel 
array detector (CPAD)
;
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0303
_diffrn_reflns_av_unetI/netI     0.0244
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            11610
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.922
_diffrn_reflns_theta_min         2.871
_diffrn_source                   '1 kW fine focus sealed tube X-ray source'
_diffrn_source_current           20.0
_diffrn_source_power             1.0
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.450
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.4730
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0855 before and 0.0424 after correction.
The Ratio of minimum to maximum transmission is 0.6344.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.497
_exptl_crystal_description       blocks
_exptl_crystal_F_000             416
_exptl_crystal_size_max          0.277
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.449
_refine_diff_density_min         -0.391
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.093
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     94
_refine_ls_number_reflns         2167
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.093
_refine_ls_R_factor_all          0.0345
_refine_ls_R_factor_gt           0.0251
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0218P)^2^+0.6268P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0570
_refine_ls_wR_factor_ref         0.0597
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1837
_reflns_number_total             2167
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4nj01422g2.cif
_cod_data_source_block           fgcupch0115_0mx
_cod_depositor_comments
'Adding full bibliography for 7063293--7063294.cif.'
_cod_database_code               7063293
_shelx_shelxl_version_number     2019/3
_shelx_estimated_absorpt_t_max   0.717
_shelx_estimated_absorpt_t_min   0.372
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B)
2.b Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5)
2.c Idealised Me refined as rotating group:
 C6(H6A,H6B,H6C), C7(H7A,H7B,H7C), C9(H9A,H9B,H9C)
;
_shelx_res_checksum              92978
_shelx_hkl_checksum              39658
_olex2_submission_special_instructions 'No special instructions were received'