1,4-Diazabicyclo[2.2.2]octane-based disalts showing non-centrosymmetric structures and phase transition behaviors
Han, Xiang-Bin; Hu, Pan; Shi, Chao; Zhang, Wen; CrystEngComm 18 (2016) 1563–; doi:10.1039/C5CE02066B

data_7224040
_publ_section_title
;
 1,4-Diazabicyclo[2.2.2]octane-based disalts showing non-centrosymmetric
 structures and phase transition behaviors
;
_journal_issue                   9
_journal_name_full               CrystEngComm
_journal_page_first              1563
_journal_paper_doi               10.1039/C5CE02066B
_journal_volume                  18
_journal_year                    2016
_chemical_formula_moiety         'C6 H14 N2, 2(B F4), H2 O'
_chemical_formula_sum            'C6 H16 B2 F8 N2 O'
_chemical_formula_weight         305.83
_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2015-12-26 deposited with the CCDC.
2016-01-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.0629(4)
_cell_length_b                   7.8370(2)
_cell_length_c                   11.6838(3)
_cell_measurement_reflns_used    6826
_cell_measurement_temperature    203(2)
_cell_measurement_theta_max      68.269
_cell_measurement_theta_min      5.645
_cell_volume                     1196.12(6)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      203(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0378
_diffrn_reflns_av_unetI/netI     0.0338
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            8326
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.269
_diffrn_reflns_theta_min         5.645
_exptl_absorpt_coefficient_mu    1.761
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.698
_exptl_crystal_description       block
_exptl_crystal_F_000             624
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.370
_refine_diff_density_min         -0.448
_refine_diff_density_rms         0.103
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.2(7)
_refine_ls_extinction_coef       0.030(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         1813
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0884
_refine_ls_R_factor_gt           0.0873
_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^)+(0.0834P)^2^+6.6453P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2236
_refine_ls_wR_factor_ref         0.2244
_reflns_Friedel_coverage         0.897
_reflns_Friedel_fraction_full    0.996
_reflns_Friedel_fraction_max     0.996
_reflns_number_gt                1784
_reflns_number_total             2189
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5ce02066b2.cif
_cod_data_source_block           203
_cod_depositor_comments
'Adding full bibliography for 7224040--7224043.cif.'
_cod_database_code               7224040
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              12539