A {Cu2I3−}∞ Chain Hybrid with Two-step Phase Transition, Switchable Dielectrics, Thermochromism and Piezochromism
Li, Qing-Qing; Pan, Xue-Wei; Zhai, Lu; Zhang, Jin; Ren, Xiaoming; Dalton Transactions  (2023) –; doi:10.1039/D3DT00650F

data_7712631
_publ_section_title
;
 A {Cu2I3&#x2212;}\\infty Chain Hybrid with Two-step Phase Transition,
 Switchable Dielectrics, Thermochromism and Piezochromism
;
_journal_name_full               'Dalton Transactions'
_journal_paper_doi               10.1039/D3DT00650F
_journal_year                    2023
_chemical_formula_sum            'C5 H14 Cu2 I3 N'
_chemical_formula_weight         595.95
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2022-11-28 deposited with the CCDC.	2023-03-15 downloaded from the CCDC.
;
_cell_angle_alpha                60.925(2)
_cell_angle_beta                 83.001(2)
_cell_angle_gamma                85.120(2)
_cell_formula_units_Z            2
_cell_length_a                   8.3083(6)
_cell_length_b                   9.6704(7)
_cell_length_c                   9.9142(6)
_cell_measurement_temperature    298(2)
_cell_volume                     690.68(8)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0770
_diffrn_reflns_av_unetI/netI     0.0524
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            14013
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        24.995
_diffrn_reflns_theta_max         24.995
_diffrn_reflns_theta_min         2.361
_exptl_absorpt_coefficient_mu    9.740
_exptl_crystal_density_diffrn    2.866
_exptl_crystal_F_000             536
_refine_diff_density_max         1.559
_refine_diff_density_min         -2.432
_refine_diff_density_rms         0.434
_refine_ls_extinction_coef       0.199(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     105
_refine_ls_number_reflns         2428
_refine_ls_number_restraints     50
_refine_ls_restrained_S_all      1.085
_refine_ls_R_factor_all          0.0842
_refine_ls_R_factor_gt           0.0791
_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^)+(0.1373P)^2^+7.5092P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2173
_refine_ls_wR_factor_ref         0.2237
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2161
_reflns_number_total             2428
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3dt00650f2.cif
_cod_data_source_block           2
_cod_database_code               7712631
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              11024
_shelx_hkl_checksum              31614