Double Salt Ionic Liquids Based on 1-Ethyl-3-Methylimidazolium Acetate and Hydroxyl-Functionalized Ammonium Acetates: Strong Effects of Weak Interactions
Pereira, Jorge F. B.; Barber, Patrick S.; Kelley, Steven Paul; Berton, Paula; Rogers, Robin D.; Phys. Chem. Chem. Phys.  (2017) –; doi:10.1039/C7CP05710E

data_7229208
_publ_section_title
;
 Double Salt Ionic Liquids Based on 1-Ethyl-3-Methylimidazolium Acetate
 and Hydroxyl-Functionalized Ammonium Acetates: Strong Effects of Weak
 Interactions
;
_journal_name_full               'Phys. Chem. Chem. Phys.'
_journal_paper_doi               10.1039/C7CP05710E
_journal_year                    2017
_chemical_formula_sum            'C7 H17 N O3'
_chemical_formula_weight         163.21
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2017-08-21 deposited with the CCDC.
2017-09-18 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 102.612(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.7116(4)
_cell_length_b                   7.1277(4)
_cell_length_c                   8.4076(5)
_cell_measurement_reflns_used    6074
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      33.12
_cell_measurement_theta_min      2.71
_cell_volume                     450.98(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0258
_diffrn_reflns_av_unetI/netI     0.0266
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            11571
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         33.177
_diffrn_reflns_theta_min         2.482
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_T_max  0.7465
_exptl_absorpt_correction_T_min  0.6206
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker AXScale'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.202
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       shard
_exptl_crystal_F_000             180
_exptl_crystal_size_max          0.120
_exptl_crystal_size_mid          0.020
_exptl_crystal_size_min          0.010
_refine_diff_density_max         0.312
_refine_diff_density_min         -0.147
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details
; 
 Flack x determined using 1459 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259). 
;
_refine_ls_abs_structure_Flack   0.3(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.066
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     151
_refine_ls_number_reflns         3417
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.0306
_refine_ls_R_factor_gt           0.0290
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0506P)^2^+0.0114P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0772
_refine_ls_wR_factor_ref         0.0787
_reflns_Friedel_coverage         0.867
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.993
_reflns_number_gt                3264
_reflns_number_total             3417
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7cp05710e2.cif
_cod_data_source_block           ChoOAc
_cod_database_code               7229208
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.989
_shelx_estimated_absorpt_t_max   0.999
_shelx_res_checksum              33400