Three Photochromic Materials based on POMs and Viologens for UV Probing, Visual Detection of Metal Ions and Amine Detecting
Xu, Xi; Yang, Mengle; Lu, Qinghai; Yu, Shuang; Ma, Shufang; Tian, Aixiang; Ying, Jun; CrystEngComm  (2022) –; doi:10.1039/D2CE01244H

data_7245569
_publ_section_title
;
 Three Photochromic Materials based on POMs and Viologens for UV Probing,
 Visual Detection of Metal Ions and Amine Detecting
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/D2CE01244H
_journal_year                    2022
_chemical_formula_moiety         'C28 H12 Cl4 Cu2 N8 O26, 2(H2 O)'
_chemical_formula_sum            'C28 H16 Cl4 Cu2 N8 O28'
_chemical_formula_weight         1181.37
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2022-08-04 deposited with the CCDC.	2022-09-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 108.067(9)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.1283(7)
_cell_length_b                   23.4063(19)
_cell_length_c                   11.9716(10)
_cell_measurement_reflns_used    5862
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.2120
_cell_measurement_theta_min      4.0210
_cell_volume                     2165.3(3)
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 10.4159
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.878
_diffrn_measurement_device_type  'Xcalibur, Atlas, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0300
_diffrn_reflns_av_unetI/netI     0.0290
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.878
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            20739
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.878
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.599
_diffrn_reflns_theta_min         3.580
_exptl_absorpt_coefficient_mu    1.337
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.88791
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.40.84a (Rigaku Oxford Diffraction, 2020)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.812
_exptl_crystal_description       block
_exptl_crystal_F_000             1180
_refine_diff_density_max         1.108
_refine_diff_density_min         -0.782
_refine_diff_density_rms         0.087
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     316
_refine_ls_number_reflns         5348
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0760
_refine_ls_R_factor_gt           0.0565
_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^)+(0.0770P)^2^+3.4958P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1459
_refine_ls_wR_factor_ref         0.1610
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4096
_reflns_number_total             5348
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2ce01244h2.cif
_cod_data_source_block           1
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7245569
_shelx_shelxl_version_number     2016/6
_shelx_res_checksum              69156
_shelx_hkl_checksum              58259