Substituent regulated photoluminescent thermochromism in a rare type of octahedral Cu4I4 clusters
Yu, Ya-Dong; Meng, Ling-Bin; Chen, Qiu-Cheng; Chen, Guang-Hui; Huang, Xiao-Chun; New Journal of Chemistry 42 (2018) 8426–; doi:10.1039/C8NJ00505B

data_7057188
_publ_section_title
;
 Substituent regulated photoluminescent thermochromism in a rare type of
 octahedral Cu4I4 clusters
;
_journal_issue                   11
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              8426
_journal_paper_doi               10.1039/C8NJ00505B
_journal_volume                  42
_journal_year                    2018
_chemical_formula_sum            'C28 H37 Cu4 I4 N7'
_chemical_formula_weight         1233.41
_chemical_name_systematic        1
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-01-01 deposited with the CCDC.
2018-03-20 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 92.486(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.6308(10)
_cell_length_b                   11.7536(8)
_cell_length_c                   21.0207(14)
_cell_measurement_reflns_used    2444
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      20.6730
_cell_measurement_theta_min      3.4560
_cell_volume                     3858.2(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Atlas, Gemini'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0833
_diffrn_reflns_av_sigmaI/netI    0.1166
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            20677
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.87
_diffrn_standards_decay_%        'not available'
_diffrn_standards_interval_count 'not available'
_diffrn_standards_interval_time  'not available'
_diffrn_standards_number         'not available'
_exptl_absorpt_coefficient_mu    5.404
_exptl_absorpt_correction_T_max  0.2751
_exptl_absorpt_correction_T_min  0.2293
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET) 
Empirical absorption correction using spherical harmonics, 
implemented in SCALE3 ABSPACK scaling algorithm. 
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.123
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2328
_exptl_crystal_preparation       ', Luminescent'
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent'
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         3.539
_refine_diff_density_min         -1.357
_refine_diff_density_rms         0.213
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     385
_refine_ls_number_reflns         6787
_refine_ls_number_restraints     51
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.1853
_refine_ls_R_factor_gt           0.0981
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1202P)^2^+30.6487P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2375
_refine_ls_wR_factor_ref         0.2960
_reflns_number_gt                3372
_reflns_number_total             6787
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8nj00505b2.cif
_cod_data_source_block           1
_cod_depositor_comments
'Adding full bibliography for 7057188--7057196.cif.'
_cod_original_cell_volume        3858.3(4)
_cod_original_sg_symbol_H-M      p21/n
_cod_database_code               7057188