Structural diversities of squarate-based complexes: photocurrent responses and thermochromic behaviours enchanced by viologens
Lin, Xiao-Yan; Zhao, Li-Ming; Wang, Dao-Hua; Wang, Yu-Kang; Li, Min; Li, Hao-Hong; Chen, Zhi-Rong; Inorganic Chemistry Frontiers 5 (2018) 189–; doi:10.1039/C7QI00672A

data_4349798
_publ_section_title
;
 Structural diversities of squarate-based complexes: photocurrent
 responses and thermochromic behaviours enchanced by viologens
;
_journal_issue                   1
_journal_name_full               'Inorganic Chemistry Frontiers'
_journal_page_first              189
_journal_paper_doi               10.1039/C7QI00672A
_journal_volume                  5
_journal_year                    2018
_chemical_formula_moiety         C9
_chemical_formula_sum            'C9 H4 Cd N O7'
_chemical_formula_weight         350.54
_space_group_IT_number           58
_space_group_name_Hall           '-P 2 2n'
_space_group_name_H-M_alt        'P n n m'
_symmetry_space_group_name_Hall  '-P 2 2n'
_symmetry_space_group_name_H-M   'P n n m'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-01-15 deposited with the CCDC.
2017-11-15 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.1360(16)
_cell_length_b                   8.2328(11)
_cell_length_c                   10.9375(15)
_cell_measurement_temperature    293(2)
_cell_volume                     1092.8(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_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  0.0186
_diffrn_reflns_av_sigmaI/netI    0.0193
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            3714
_diffrn_reflns_theta_full        25.08
_diffrn_reflns_theta_max         25.08
_diffrn_reflns_theta_min         2.51
_exptl_absorpt_coefficient_mu    2.025
_exptl_crystal_density_diffrn    2.131
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             676.0
_refine_diff_density_max         0.739
_refine_diff_density_min         -0.467
_refine_diff_density_rms         0.093
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   2.447
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     93
_refine_ls_number_reflns         1028
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      2.447
_refine_ls_R_factor_all          0.0318
_refine_ls_R_factor_gt           0.0257
_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^)+(0.0100P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0640
_refine_ls_wR_factor_ref         0.0650
_reflns_number_gt                862
_reflns_number_total             1034
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7qi00672a2.cif
_cod_data_source_block           pnn2
_cod_original_sg_symbol_Hall     -P22n
_cod_original_sg_symbol_H-M      Pnnm
_cod_database_code               4349798