Rational Design and Synthesis of Highly Active Pincer-Iridium Catalysts for Alkane Dehydrogenation
Kundu, Sabuj; Choliy, Yuriy; Zhuo, Gao; Ahuja, Ritu; Emge, Thomas J.; Warmuth, Ralf; Brookhart, Maurice; Krogh-Jespersen, Karsten; Goldman, Alan S.; Organometallics 28 (2009) 5432–5444; doi:10.1021/om900568f

data_4070012
_publ_section_title
;
 Rational Design and Synthesis of Highly Active Pincer-Iridium Catalysts
 for Alkane Dehydrogenation
;
_journal_coden_ASTM              ORGND7
_journal_issue                   18
_journal_name_full               Organometallics
_journal_page_first              5432
_journal_page_last               5444
_journal_paper_doi               10.1021/om900568f
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C36 H64 Ir2 P4'
_chemical_formula_weight         1005.16
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 101.623(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.411(2)
_cell_length_b                   11.543(1)
_cell_length_c                   20.599(2)
_cell_measurement_reflns_used    4467
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      23.23
_cell_measurement_theta_min      2.17
_cell_volume                     3822.1(7)
_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 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0997
_diffrn_reflns_av_sigmaI/netI    0.0739
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            26123
_diffrn_reflns_theta_full        23.25
_diffrn_reflns_theta_max         23.25
_diffrn_reflns_theta_min         2.02
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    7.147
_exptl_absorpt_correction_T_max  0.9999
_exptl_absorpt_correction_T_min  0.7709
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SAINT (SADABS)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.747
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       lathe
_exptl_crystal_F_000             1976
_exptl_crystal_size_max          0.06
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.01
_refine_diff_density_max         1.219
_refine_diff_density_min         -0.799
_refine_diff_density_rms         0.169
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.004
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     413
_refine_ls_number_reflns         5498
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.004
_refine_ls_R_factor_all          0.0748
_refine_ls_R_factor_gt           0.0415
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0370P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0778
_refine_ls_wR_factor_ref         0.0878
_reflns_number_gt                3930
_reflns_number_total             5498
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900568f_si_003.cif
_cod_data_source_block           irh4_gao
_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 
;
_cod_original_cell_volume        3822.1(6)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4070012