Effect of the cation structure on the properties of homobaric imidazolium ionic liquids
Koutsoukos, Spyridon; Philippi, Frederik; Rauber, Daniel; Pugh, David; Kay, Christopher William Michael; Welton, Tom; Physical Chemistry Chemical Physics  (2022) –; doi:10.1039/D1CP05169E

data_7244553
_publ_section_title
;
 Effect of the cation structure on the properties of homobaric imidazolium
 ionic liquids
;
_journal_name_full               'Physical Chemistry Chemical Physics'
_journal_paper_doi               10.1039/D1CP05169E
_journal_year                    2022
_chemical_formula_moiety         'C7 H13 N2, Br'
_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     iterative
_audit_creation_date             2021-09-02
_audit_creation_method
;
Olex2 1.3
(compiled 2020.02.04 svn.rd84adfe8 for OlexSys, GUI svn.r6032)
;
_audit_update_record
;
2021-11-03 deposited with the CCDC.	2022-02-28 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 102.298(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.8182(2)
_cell_length_b                   17.0994(6)
_cell_length_c                   8.0181(3)
_cell_measurement_reflns_used    2883
_cell_measurement_temperature    172.95(10)
_cell_measurement_theta_max      25.9350
_cell_measurement_theta_min      2.8710
_cell_volume                     913.36(5)
_computing_cell_refinement       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'olex2.solve 1.3 (Bourhis et al., 2015)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      172.95(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 16.0382
_diffrn_detector_type            Eos
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.905
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w    -31.00  53.00   1.00    1.49    --  -13.18  37.00 -30.00   84
  2  \w     16.00  69.00   1.00    1.49    --   14.43  57.00  30.00   53
  3  \w      4.00  81.00   1.00    1.49    --   14.43  57.00  90.00   77
  4  \w     -2.00  82.00   1.00    1.49    --   14.43  57.00 -30.00   84
  5  \w     -2.00  82.00   1.00    1.49    --   14.43  57.00-150.00   84
  6  \w    -52.00  40.00   1.00    1.49    --   14.43 -77.00  60.00   92
  7  \w    -62.00  11.00   1.00    1.49    --  -13.18 116.00  82.32   73
  8  \w    -63.00   9.00   1.00    1.49    --  -13.18 118.00-176.16   72
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Xcalibur, Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.1030699000
_diffrn_orient_matrix_UB_12      -0.0102523000
_diffrn_orient_matrix_UB_13      0.0222386000
_diffrn_orient_matrix_UB_21      0.0262562000
_diffrn_orient_matrix_UB_22      0.0401784000
_diffrn_orient_matrix_UB_23      0.0070081000
_diffrn_orient_matrix_UB_31      -0.0048690000
_diffrn_orient_matrix_UB_32      -0.0006053000
_diffrn_orient_matrix_UB_33      0.0875031000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0427
_diffrn_reflns_av_unetI/netI     0.0381
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.905
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_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            11931
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.905
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.280
_diffrn_reflns_theta_min         2.860
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    4.435
_exptl_absorpt_correction_T_max  0.544
_exptl_absorpt_correction_T_min  0.307
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.46 (Rigaku Oxford Diffraction, 2015)
Analytical numeric absorption correction using a multifaceted crystal
			model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.492
_exptl_crystal_description       block
_exptl_crystal_F_000             416
_exptl_crystal_size_max          0.448
_exptl_crystal_size_mid          0.261
_exptl_crystal_size_min          0.151
_refine_diff_density_max         0.340
_refine_diff_density_min         -0.291
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     94
_refine_ls_number_reflns         2055
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0528
_refine_ls_R_factor_gt           0.0318
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0227P)^2^+0.6456P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0587
_refine_ls_wR_factor_ref         0.0647
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1570
_reflns_number_total             2055
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1cp05169e5.cif
_cod_data_source_block           '[C2C1C1im]Br'
_cod_original_cell_volume        913.36(6)
_cod_database_code               7244553
_shelx_shelxl_version_number     2018/3
_chemical_oxdiff_formula         'C7 H13 Br N2'
_chemical_oxdiff_usercomment     SKS3_BuOH
_reflns_odcompleteness_completeness 99.88
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     24.97
_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:
 C5(H5A,H5B)
2.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4)
2.c Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C6(H6A,H6B,H6C), C8(H8A,H8B,H8C)
;
_shelx_res_checksum              45583
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.378
_oxdiff_exptl_absorpt_empirical_full_min 0.806