Conformational Flexibility and Cation‒Anion Interactions in 1-Butyl-2,3-dimethylimidazolium Salts
Laus, Gerhard; Bentivoglio, Gino; Kahlenberg, Volker; Wurst, Klaus; Nauer, Gerhard; Schottenberger, Herwig; Tanaka, Masato; Siehl, Hans-Ullrich; Crystal Growth & Design 12 (2012) 1838–; doi:10.1021/cg201424m

data_4505893
_publ_section_title
;
 Conformational Flexibility and Cation--Anion Interactions in
 1-Butyl-2,3-dimethylimidazolium Salts
;
_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1838
_journal_paper_doi               10.1021/cg201424m
_journal_volume                  12
_journal_year                    2012
_chemical_formula_moiety         'C9 H17 N2, Cl9 Ti2'
_chemical_formula_sum            'C9 H17 Cl9 N2 Ti2'
_chemical_formula_weight         568.10
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                75.251(3)
_cell_angle_beta                 86.185(3)
_cell_angle_gamma                86.496(3)
_cell_formula_units_Z            2
_cell_length_a                   8.8562(5)
_cell_length_b                   9.4412(4)
_cell_length_c                   13.3806(6)
_cell_measurement_reflns_used    12192
_cell_measurement_temperature    233(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      1.0
_cell_volume                     1078.40(9)
_computing_data_collection       KappaCCD
_computing_data_reduction        'DENZO and SCALEPACK'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      233(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'phi- and omega-scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0223
_diffrn_reflns_av_sigmaI/netI    0.0369
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            6291
_diffrn_reflns_theta_full        25.06
_diffrn_reflns_theta_max         25.06
_diffrn_reflns_theta_min         1.58
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    1.850
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.750
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             564
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.286
_refine_diff_density_min         -0.313
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     293
_refine_ls_number_reflns         3790
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0370
_refine_ls_R_factor_gt           0.0288
_refine_ls_shift/su_max          0.135
_refine_ls_shift/su_mean         0.033
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0144P)^2^+0.9021P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0610
_refine_ls_wR_factor_ref         0.0651
_reflns_number_gt                3257
_reflns_number_total             3790
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg201424m_si_003.cif
_cod_data_source_block           bmmi_Ti2Cl9
_cod_original_sg_symbol_Hall     -P1
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4505893