Sterically hindered phenanthroimidazole ligands drive the structural flexibility and facile ligand exchange in cyclometalated iridium(III) complexes.
Tatarin, Sergei V.; Kalle, Paulina; Taydakov, Ilya V.; Varaksina, Evgenia A.; Korshunov, Vladislav M.; Bezzubov, Stanislav I.; Dalton transactions (Cambridge, England : 2003) 50 (2021) 6889–6900; doi:10.1039/d1dt00820j

data_7707207
_publ_section_title
;
 Sterically hindered phenanthroimidazole ligands drive the structural
 flexibility and facile ligand exchange in cyclometalated iridium(III)
 complexes.
;
_journal_issue                   20
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6889
_journal_page_last               6900
_journal_paper_doi               10.1039/d1dt00820j
_journal_volume                  50
_journal_year                    2021
_chemical_formula_moiety         'C116 H84 Cl2 Ir2 N8 O8'
_chemical_formula_sum            'C116 H84 Cl2 Ir2 N8 O8'
_chemical_formula_weight         2173.21
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_audit_creation_date             2020-12-22
_audit_creation_method
;
Olex2 1.3
(compiled Nov 21 2019 18:26:39 for OlexSys, GUI svn.r6003)
;
_audit_update_record
;
2020-12-23 deposited with the CCDC.	2021-04-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 115.060(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   24.510(3)
_cell_length_b                   22.242(3)
_cell_length_c                   22.805(3)
_cell_measurement_reflns_used    9947
_cell_measurement_temperature    150.15
_cell_measurement_theta_max      29.97
_cell_measurement_theta_min      2.48
_cell_volume                     11262(3)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_collection       'APEX3 v.2017.3_0 (Bruker AXS, 2017)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'olex2.solve 1.3 (Bourhis et al., 2015)'
_diffrn_ambient_temperature      150
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'Bruker SMART CCD area detector'
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX II'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0634
_diffrn_reflns_av_unetI/netI     0.0632
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            48294
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.000
_diffrn_reflns_theta_min         1.972
_diffrn_source_current           30.0
_diffrn_source_power             1.5
_diffrn_source_target            Mo
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    2.463
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.4979
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/5 (Bruker,2014/5) was used for absorption correction.
wR2(int) was 0.1225 before and 0.0547 after correction.
The Ratio of minimum to maximum transmission is 0.6673.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.282
_exptl_crystal_description       plate
_exptl_crystal_F_000             4352
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: CH2Cl2'
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.04
_refine_diff_density_max         1.957
_refine_diff_density_min         -2.436
_refine_diff_density_rms         0.138
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     627
_refine_ls_number_reflns         12241
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0751
_refine_ls_R_factor_gt           0.0502
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0369P)^2^+118.8870P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1117
_refine_ls_wR_factor_ref         0.1197
_reflns_Friedel_coverage         0.000
_reflns_number_gt                8889
_reflns_number_total             12241
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1dt00820j2.cif
_cod_data_source_block           z
_cod_depositor_comments
'Adding full bibliography for 7707205--7707218.cif.'
_cod_original_cell_volume        11262(2)
_cod_database_code               7707207
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.908
_shelx_estimated_absorpt_t_min   0.525
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Uiso/Uaniso restraints and constraints
C47 \\sim C46: within 2A with sigma of 0.005 and sigma for terminal atoms of
0.005 within 2A
3. Others
 Fixed Sof: C58(0.6) H58A(0.6) H58B(0.6) H58C(0.6) C60(0.4) H60A(0.4)
 H60B(0.4) H60C(0.4)
4.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C5(H5), C9(H9), C10(H10), C11(H11), C12(H12), C13(H13), C16(H16),
 C17(H17), C18(H18), C19(H19), C22(H22), C23(H23), C24(H24), C25(H25), C29(H29),
  C32(H32), C36(H36), C37(H37), C38(H38), C39(H39), C40(H40), C43(H43),
 C44(H44), C45(H45), C46(H46), C49(H49), C50(H50), C51(H51), C52(H52)
4.b Idealised Me refined as rotating group:
 C56(H56A,H56B,H56C), C55(H55A,H55B,H55C), C57(H57A,H57B,H57C), C58(H58A,H58B,
 H58C), C60(H60A,H60B,H60C)
;
_smtbx_masks_void_probe_radius   1.2
_smtbx_masks_void_truncation_radius 1.2
_shelx_res_checksum              7657
_shelx_hkl_checksum              57013
_shelx_fab_checksum              25708
_olex2_submission_special_instructions 'No special instructions were received'