Phosphorescence quantum yield enhanced by intermolecular hydrogen bonds in Cu4I4 clusters in the solid state.
Mazzeo, Paolo P.; Maini, Lucia; Petrolati, Alex; Fattori, Valeria; Shankland, Kenneth; Braga, Dario; Dalton transactions (Cambridge, England : 2003) 43 (2014) 9448–9455; doi:10.1039/c4dt00218k

data_7031188
_publ_section_title
;
 Phosphorescence quantum yield enhanced by intermolecular hydrogen bonds
 in Cu4I4 clusters in the solid state.
;
_journal_issue                   25
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              9448
_journal_page_last               9455
_journal_paper_doi               10.1039/c4dt00218k
_journal_volume                  43
_journal_year                    2014
_chemical_formula_sum            'C24 H52 Cu4 I4 N4'
_chemical_formula_weight         1158.46
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           121
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'I -4 2'
_symmetry_space_group_name_H-M   'I -4 2 m'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.9963(7)
_cell_length_b                   9.9963(7)
_cell_length_c                   18.114(2)
_cell_measurement_reflns_used    400
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.0811
_cell_measurement_theta_min      2.8759
_cell_volume                     1810.1(3)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 16.1340
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.913
_diffrn_measurement_device_type  'Xcalibur, Sapphire3'
_diffrn_measurement_method       '\w scans'
_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  0.0718
_diffrn_reflns_av_sigmaI/netI    0.1390
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            2132
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         29.15
_diffrn_reflns_theta_min         2.88
_exptl_absorpt_coefficient_mu    5.749
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.96619
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.133
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1112
_exptl_crystal_size_max          0.06
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.558
_refine_diff_density_min         -0.535
_refine_diff_density_rms         0.117
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.2(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.917
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     30
_refine_ls_number_reflns         1090
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.917
_refine_ls_R_factor_all          0.1876
_refine_ls_R_factor_gt           0.0735
_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^)+(0.0705P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1348
_refine_ls_wR_factor_ref         0.1804
_reflns_number_gt                453
_reflns_number_total             1090
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c4dt00218k2.cif
_cod_data_source_block           3
_cod_depositor_comments
'Adding full bibliography for 7031187--7031190.cif.'
_cod_database_code               7031188