Above-room-temperature molecular ferroelectric and fast switchable dielectric of diisopropylammonium perchlorate
Kaige Gao; Minqiang Gu; Xiangbiao Qiu; X. N. Ying; Heng-Yun Ye; Yi Zhang; Jinglan Sun; Xiangjian Meng; F. M. Zhang; Di Wu; Hong-Ling Cai; X. S. Wu; Journal of Materials Chemistry C 2 (2014) 9957–9963; doi:10.1039/C4TC01882F

data_7233937
_publ_section_title
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 Above-room-temperature molecular ferroelectric and fast switchable
 dielectric of diisopropylammonium perchlorate
;
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              9957
_journal_page_last               9963
_journal_paper_doi               10.1039/C4TC01882F
_journal_volume                  2
_journal_year                    2014
_chemical_formula_sum            'C6 H16 Cl N O4'
_chemical_formula_weight         201.65
_space_group_IT_number           1
_space_group_name_Hall           'P 1'
_space_group_name_H-M_alt        'P 1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                82.77(19)
_cell_angle_beta                 65.14(13)
_cell_angle_gamma                79.9(2)
_cell_formula_units_Z            2
_cell_length_a                   8.15(3)
_cell_length_b                   8.52(4)
_cell_length_c                   8.77(3)
_cell_measurement_reflns_used    1141
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.7475
_cell_measurement_theta_min      3.4324
_cell_volume                     543(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.952
_diffrn_measured_fraction_theta_max 0.952
_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  0.0406
_diffrn_reflns_av_sigmaI/netI    0.0742
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            3070
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         3.43
_exptl_absorpt_coefficient_mu    0.334
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6580
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             216
_exptl_crystal_size_max          0.3500
_exptl_crystal_size_mid          0.3000
_exptl_crystal_size_min          0.2700
_refine_diff_density_max         0.521
_refine_diff_density_min         -0.319
_refine_diff_density_rms         0.085
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.2(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.081
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         2463
_refine_ls_number_restraints     93
_refine_ls_restrained_S_all      1.178
_refine_ls_R_factor_all          0.1572
_refine_ls_R_factor_gt           0.1098
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2912
_refine_ls_wR_factor_ref         0.3450
_reflns_number_gt                1244
_reflns_number_total             2463
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1000001.cif
_cod_data_source_block           PCOD1000001
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-scan' was
changed to 'multi-scan' in accordance with the built-in table derived
from the CIF Core dictionary named 'cif_core.dic' version 2.4.5 last
updated on 2014-11-21.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      ' P 1'
_cod_database_code               7233937