Multiple C−H Activations of Methyltert-Butyl Ether at Pincer Iridium Complexes: Synthesis and Thermolysis of Ir(I) Fischer Carbenes1
Romero, Patricio E.; Whited, Matthew T.; Grubbs, Robert H.; Organometallics 27 (2008) 3422–; doi:10.1021/om8003515

data_4071745
_publ_section_title
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 Multiple C&#x2212;H Activations of Methyltert-Butyl Ether at Pincer
 Iridium Complexes: Synthesis and Thermolysis of Ir(I) Fischer Carbenes1
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_journal_issue                   14
_journal_name_full               Organometallics
_journal_page_first              3422
_journal_paper_doi               10.1021/om8003515
_journal_volume                  27
_journal_year                    2008
_chemical_formula_sum            'C27 H38 I Ir P2'
_chemical_formula_weight         743.61
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            4
_cell_length_a                   7.4979(4)
_cell_length_b                   16.7508(10)
_cell_length_c                   20.6495(12)
_cell_measurement_reflns_used    9527
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      49.47
_cell_measurement_theta_min      2.32
_cell_volume                     2593.5(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0312
_diffrn_reflns_av_sigmaI/netI    0.0534
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       -35
_diffrn_reflns_limit_l_max       44
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            88209
_diffrn_reflns_theta_full        49.60
_diffrn_reflns_theta_max         49.60
_diffrn_reflns_theta_min         1.57
_exptl_absorpt_coefficient_mu    6.475
_exptl_absorpt_correction_T_max  0.491
_exptl_absorpt_correction_T_min  0.306
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.904
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1440
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         12.030
_refine_diff_density_min         -3.667
_refine_diff_density_rms         0.268
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.657(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         26359
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0568
_refine_ls_R_factor_gt           0.0442
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0527P)^2^+1.1489P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0986
_refine_ls_wR_factor_ref         0.1029
_reflns_number_gt                22311
_reflns_number_total             26359
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om8003515-file002.cif
_cod_data_source_block           per05abs
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               4071745