Rare electron-transfer photochromic and thermochromic difunctional compounds
Pei-Xin Li; Ming-Sheng Wang; Li-Zhen Cai; Guan-E. Wang; Guo-Cong Guo; Journal of Materials Chemistry C 3 (2015) 253–256; doi:10.1039/C4TC01315H

data_7233963
_publ_section_title
;
 Rare electron-transfer photochromic and thermochromic difunctional
 compounds
;
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              253
_journal_page_last               256
_journal_paper_doi               10.1039/C4TC01315H
_journal_volume                  3
_journal_year                    2015
_chemical_formula_sum            'C12 H10 Br2 N2 O2 Zn'
_chemical_formula_weight         439.41
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 114.673(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   20.940(13)
_cell_length_b                   9.168(4)
_cell_length_c                   16.491(10)
_cell_measurement_reflns_used    3713
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.4816
_cell_measurement_theta_min      2.5919
_cell_volume                     2877(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  Mercury2
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating-anode generator'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0722
_diffrn_reflns_av_sigmaI/netI    0.0466
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            11213
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.67
_exptl_absorpt_coefficient_mu    7.260
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.5553
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    2.029
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1696
_exptl_crystal_size_max          0.2000
_exptl_crystal_size_mid          0.1800
_exptl_crystal_size_min          0.0800
_refine_diff_density_max         1.265
_refine_diff_density_min         -1.099
_refine_diff_density_rms         0.185
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.993
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         3261
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.993
_refine_ls_R_factor_all          0.0848
_refine_ls_R_factor_gt           0.0642
_refine_ls_shift/su_max          0.090
_refine_ls_shift/su_mean         0.015
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1172P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1662
_refine_ls_wR_factor_ref         0.1800
_reflns_number_gt                2295
_reflns_number_total             3261
_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      C2/c
_cod_database_code               7233963