N-Bridged Pincer Iridium Complexes for Highly Efficient Alkane Dehydrogenation and the Relevant Linker Effects
Zhang, Xin; Wu, Song-Bai; Leng, Xuebing; Chung, Lung Wa; Liu, Guixia; Huang, Zheng; ACS Catalysis  (2020) 6475–6487; doi:10.1021/acscatal.0c00539

data_4517714
_publ_section_title
;
 N-Bridged Pincer Iridium Complexes for Highly Efficient Alkane
 Dehydrogenation and the Relevant Linker Effects
;
_journal_name_full               'ACS Catalysis'
_journal_page_first              6475
_journal_page_last               6487
_journal_paper_doi               10.1021/acscatal.0c00539
_journal_year                    2020
_chemical_formula_moiety         'C20 H34 Ir N O2 P2'
_chemical_formula_sum            'C20 H34 Ir N O2 P2'
_chemical_formula_weight         574.62
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2018-04-19
_audit_creation_method
;
Olex2 1.2
(compiled 2018.04.03 svn.r3497 for OlexSys, GUI svn.r5486)
;
_cell_angle_alpha                90
_cell_angle_beta                 97.3780(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.2206(3)
_cell_length_b                   11.3239(2)
_cell_length_c                   15.3513(3)
_cell_measurement_reflns_used    9808
_cell_measurement_temperature    170(2)
_cell_measurement_theta_max      54.891
_cell_measurement_theta_min      6.090
_cell_volume                     2279.20(8)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      170.01
_diffrn_measured_fraction_theta_full 0.965
_diffrn_measured_fraction_theta_max 0.966
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           GaK\a
_diffrn_radiation_wavelength     1.34139
_diffrn_reflns_av_R_equivalents  0.0347
_diffrn_reflns_av_unetI/netI     0.0265
_diffrn_reflns_Laue_measured_fraction_full 0.965
_diffrn_reflns_Laue_measured_fraction_max 0.966
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            22096
_diffrn_reflns_point_group_measured_fraction_full 0.965
_diffrn_reflns_point_group_measured_fraction_max 0.966
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         54.867
_diffrn_reflns_theta_min         2.932
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    8.801
_exptl_absorpt_correction_T_max  0.7508
_exptl_absorpt_correction_T_min  0.5447
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1105 before and 0.0513 after correction. The Ratio of minimum to maximum transmission is 0.7255. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.675
_exptl_crystal_description       block
_exptl_crystal_F_000             1136
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.516
_refine_diff_density_min         -0.619
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.112
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     244
_refine_ls_number_reflns         4178
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.112
_refine_ls_R_factor_all          0.0198
_refine_ls_R_factor_gt           0.0196
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0044P)^2^+3.0575P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0458
_refine_ls_wR_factor_ref         0.0459
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4136
_reflns_number_total             4178
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            cs0c00539_si_014.cif
_cod_data_source_block           mjl18147_0m
_cod_depositor_comments
'Adding full bibliography for 4517711--4517721.cif.'
_cod_database_code               4517714
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.667
_shelx_estimated_absorpt_t_min   0.473
_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.a Ternary CH refined with riding coordinates:
 C8(H8), C11(H11), C14(H14), C17(H17)
2.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C5(H5)
2.c Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C9(H9A,H9B,H9C), C10(H10A,H10B,H10C), C12(H12A,H12B,H12C),
 C13(H13A,H13B,H13C), C15(H15A,H15B,H15C), C16(H16A,H16B,H16C), C18(H18A,H18B,
 H18C), C19(H19A,H19B,H19C)
;
_shelx_res_checksum              20947
_shelx_hkl_checksum              36945
_olex2_submission_special_instructions 'No special instructions were received'