Mixed metal double salt ionic liquids comprised of [HN<sub>222</sub>]<sub>2</sub>[ZnCl<sub>4</sub>] and AlCl<sub>3</sub> provide tunable Lewis acid catalysts related to the ionic environment.
Kore, Rajkumar; Kelley, Steven P.; Aduri, Pavankumar; Rogers, Robin D.; Dalton transactions (Cambridge, England : 2003) 47 (2018) 7795–7803; doi:10.1039/c8dt00976g

data_7046302
_publ_section_title
;
 Mixed metal double salt ionic liquids comprised of
 [HN<sub>222</sub>]<sub>2</sub>[ZnCl<sub>4</sub>] and AlCl<sub>3</sub>
 provide tunable Lewis acid catalysts related to the ionic environment.
;
_journal_issue                   23
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7795
_journal_page_last               7803
_journal_paper_doi               10.1039/c8dt00976g
_journal_volume                  47
_journal_year                    2018
_chemical_formula_moiety         'C6 H16 N +, Al Cl4 -'
_chemical_formula_sum            'C6 H16 Al Cl4 N'
_chemical_formula_weight         270.98
_chemical_name_systematic        'Triethylammonium tetrachloroaluminate'
_chemical_properties_physical    Moisture-sensitive,Hygroscopic
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2017-11-14 deposited with the CCDC.
2018-05-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.859(17)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.607(2)
_cell_length_b                   12.693(4)
_cell_length_c                   14.162(3)
_cell_measurement_reflns_used    3445
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      23.03
_cell_measurement_theta_min      2.89
_cell_volume                     1354.6(6)
_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      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.989
_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  0.0566
_diffrn_reflns_av_unetI/netI     0.0700
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.989
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            14143
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.558
_diffrn_reflns_theta_min         2.164
_exptl_absorpt_coefficient_mu    0.898
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6896
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker AXScale'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.329
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             560
_exptl_crystal_recrystallization_method 'From the Melt'
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.030
_exptl_crystal_size_min          0.010
_refine_diff_density_max         0.350
_refine_diff_density_min         -0.316
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.991
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     115
_refine_ls_number_reflns         3103
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.991
_refine_ls_R_factor_all          0.1004
_refine_ls_R_factor_gt           0.0437
_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^)+(0.0394P)^2^+0.0213P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0825
_refine_ls_wR_factor_ref         0.0989
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1841
_reflns_number_total             3103
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt00976g1.cif
_cod_data_source_block           AlCl4
_cod_depositor_comments
'Adding full bibliography for 7046301--7046302.cif.'
_cod_database_code               7046302
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.855
_shelx_estimated_absorpt_t_max   0.991
_shelx_res_checksum              2045