Sterically Encumbered Iridium Bis(N-heterocyclic carbene) Systems: Multiple C−H Activation Processes and Isomeric Normal/Abnormal Carbene Complexes
Tang, Christina Y.; Smith, William; Vidovic, Dragoslav; Thompson, Amber L.; Chaplin, Adrian B.; Aldridge, Simon; Organometallics 28 (2009) 3059–; doi:10.1021/om9000082

data_4069078
_publ_section_title
;
 Sterically Encumbered Iridium Bis(N-heterocyclic carbene) Systems:
 Multiple C&#x2212;H Activation Processes and Isomeric Normal/Abnormal
 Carbene Complexes
;
_journal_issue                   10
_journal_name_full               Organometallics
_journal_page_first              3059
_journal_paper_doi               10.1021/om9000082
_journal_volume                  28
_journal_year                    2009
_chemical_formula_moiety         'C42 H48 Cl1 Ir1 N4'
_chemical_formula_sum            'C42 H48 Cl Ir N4'
_chemical_formula_weight         836.54
_space_group_IT_number           14
_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
_audit_creation_date             08-12-23
_audit_creation_method           CRYSTALS_ver_12.86
_cell_angle_alpha                90
_cell_angle_beta                 104.2494(8)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.0552(4)
_cell_length_b                   12.3306(4)
_cell_length_c                   20.7650(6)
_cell_measurement_reflns_used    117159
_cell_measurement_temperature    150
_cell_measurement_theta_max      20
_cell_measurement_theta_min      5
_cell_volume                     3984.4(2)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1997-2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SHELXS 86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device       'Nonius KappaCCD'
_diffrn_measurement_device_type  Area
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.074
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            22348
_diffrn_reflns_theta_full        19.990
_diffrn_reflns_theta_max         20.398
_diffrn_reflns_theta_min         5.119
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.450
_exptl_absorpt_correction_T_max  0.90
_exptl_absorpt_correction_T_min  0.83
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            clear_intense_orange
_exptl_crystal_density_diffrn    1.394
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1688
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.03
_platon_squeeze_details
;
The discrete Fourier transform of the void region were treated as 
contributions to the A and B parts of the calculated structure factors.
;
_refine_diff_density_max         0.51
_refine_diff_density_min         -0.71
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0678
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     433
_refine_ls_number_reflns         3323
_refine_ls_number_restraints     463
_refine_ls_R_factor_all          0.0407
_refine_ls_R_factor_gt           0.0306
_refine_ls_shift/su_max          0.001976
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
 Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982) 
 [weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)] 
 where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax 
 Method = Robust Weighting (Prince, 1982) 
 W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^ 
 A~i~ are: 
 0.709 0.395 0.574 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0352
_refine_ls_wR_factor_gt          0.0315
_refine_ls_wR_factor_ref         0.0315
_reflns_limit_h_max              15
_reflns_limit_h_min              -15
_reflns_limit_k_max              12
_reflns_limit_k_min              0
_reflns_limit_l_max              20
_reflns_limit_l_min              0
_reflns_number_gt                3323
_reflns_number_total             3879
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.07
_oxford_diffrn_Wilson_scale      121.24
_oxford_refine_ls_r_factor_ref   0.0306
_oxford_refine_ls_scale          0.09131(14)
_oxford_reflns_number_all        3878
_oxford_reflns_threshold_expression_ref I>2.0\s(I)
_cod_data_source_file            om9000082_si_001.cif
_cod_data_source_block           Ir-IMes-IMesPrime-HCl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'P 1 21/n 1 '
_cod_original_formula_sum        'C42 H48 Cl1 Ir1 N4'
_cod_database_code               4069078