Exceptionally long-lived light-emitting electrochemical cells: multiple intra-cation π-stacking interactions in [Ir(C^N)2(N^N)][PF6] emitters
Bünzli, Andreas M.; Constable, Edwin C.; Housecroft, Catherine E.; Prescimone, Alessandro; Zampese, Jennifer A.; Longo, Giulia; Gil-Escrig, Lidón; Pertegás, Antonio; Ortí, Enrique; Bolink, Henk J.; Chem. Sci. 6 (2015) 2843–; doi:10.1039/C4SC03942D

data_1518786
_publ_section_title
;
 Exceptionally long-lived light-emitting electrochemical cells: multiple
 intra-cation \p-stacking interactions in [Ir(C^N)2(N^N)][PF6] emitters
;
_journal_issue                   5
_journal_name_full               'Chem. Sci.'
_journal_page_first              2843
_journal_paper_doi               10.1039/C4SC03942D
_journal_volume                  6
_journal_year                    2015
_chemical_formula_moiety         'C23 H17 N'
_chemical_formula_sum            'C23 H17 N'
_chemical_formula_weight         307.38
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2014-08-13 deposited with the CCDC.
2015-03-04 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.4701(2)
_cell_length_b                   19.7919(5)
_cell_length_c                   11.1894(3)
_cell_measurement_reflns_used    4881
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      67.70
_cell_measurement_theta_min      4.47
_cell_volume                     1654.32(8)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0255
_diffrn_reflns_av_unetI/netI     0.0244
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.990
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            11157
_diffrn_reflns_point_group_measured_fraction_full 0.968
_diffrn_reflns_point_group_measured_fraction_max 0.954
_diffrn_reflns_theta_full        66.500
_diffrn_reflns_theta_max         68.023
_diffrn_reflns_theta_min         4.468
_exptl_absorpt_coefficient_mu    0.544
_exptl_absorpt_correction_T_max  0.968
_exptl_absorpt_correction_T_min  0.949
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_description       block
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.080
_exptl_crystal_size_min          0.060
_refine_diff_density_max         0.172
_refine_diff_density_min         -0.144
_refine_diff_density_rms         0.026
_refine_ls_abs_structure_details
; 
 Flack x determined using 1202 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons and Flack (2004), Acta Cryst. A60, s61). 
;
_refine_ls_abs_structure_Flack   1.2(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         2874
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0360
_refine_ls_R_factor_gt           0.0343
_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^)+(0.0631P)^2^+0.0887P] 
 where P=(Fo^2^+2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0966
_refine_ls_wR_factor_ref         0.0986
_reflns_Friedel_coverage         0.828
_reflns_Friedel_fraction_full    0.941
_reflns_Friedel_fraction_max     0.914
_reflns_number_gt                2734
_reflns_number_total             2874
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c4sc03942d2.cif
_cod_data_source_block           ab95
_cod_depositor_comments
'Adding full bibliography for 1518786--1518789.cif.'
_cod_database_code               1518786
_shelx_estimated_absorpt_t_min   0.923
_shelx_estimated_absorpt_t_max   0.968
_shelxl_version_number           2013-2
_shelx_res_checksum              68846