Bistable State of Protons for Low-Voltage Memories.
Song, Xian-Jiang; Zhang, Zhi-Xu; Chen, Xiao-Gang; Zhang, Han-Yue; Pan, Qiang; Yao, Jie; You, Yu-Meng; Xiong, Ren-Gen; Journal of the American Chemical Society  (2020) –; doi:10.1021/jacs.0c02924

data_4134881
_publ_section_title
;
 Bistable State of Protons for Low-Voltage Memories.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.0c02924
_journal_year                    2020
_chemical_formula_moiety         'C2 F6 N O4 S2, C6 H13 N2'
_chemical_formula_sum            'C8 H13 F6 N3 O4 S2'
_chemical_formula_weight         393.33
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 112.905(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   12.500(5)
_cell_length_b                   16.911(7)
_cell_length_c                   15.921(7)
_cell_measurement_reflns_used    8202
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.4778
_cell_measurement_theta_min      2.9028
_cell_volume                     3100(2)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 28.5714
_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_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0392
_diffrn_reflns_av_sigmaI/netI    0.0448
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            28079
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.90
_exptl_absorpt_coefficient_mu    0.429
_exptl_absorpt_correction_T_max  0.9957
_exptl_absorpt_correction_T_min  0.9911
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.685
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1600
_exptl_crystal_size_max          0.02
_exptl_crystal_size_mid          0.01
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.709
_refine_diff_density_min         -0.450
_refine_diff_density_rms         0.083
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.13(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     829
_refine_ls_number_reflns         9331
_refine_ls_number_restraints     769
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.0739
_refine_ls_R_factor_gt           0.0646
_refine_ls_shift/su_max          0.070
_refine_ls_shift/su_mean         0.007
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0623P)^2^+9.8345P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1597
_refine_ls_wR_factor_ref         0.1669
_reflns_number_gt                8241
_reflns_number_total             9331
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0c02924_si_002.cif
_cod_data_source_block           DABCO-FS-173K
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4134881