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_4082278
_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            'C22 H37 Ir O P2'
_chemical_formula_weight         571.65
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 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            8
_cell_length_a                   11.4336(10)
_cell_length_b                   15.3744(13)
_cell_length_c                   26.225(2)
_cell_measurement_reflns_used    7728
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.48
_cell_measurement_theta_min      2.65
_cell_volume                     4610.0(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 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0416
_diffrn_reflns_av_sigmaI/netI    0.0415
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            46411
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.04
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    5.940
_exptl_absorpt_correction_T_max  0.9999
_exptl_absorpt_correction_T_min  0.4947
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SAINT (SADABS)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.647
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2272
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.04
_refine_diff_density_max         5.412
_refine_diff_density_min         -2.170
_refine_diff_density_rms         0.250
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.049(16)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.001
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     470
_refine_ls_number_reflns         11428
_refine_ls_number_restraints     271
_refine_ls_restrained_S_all      1.004
_refine_ls_R_factor_all          0.0793
_refine_ls_R_factor_gt           0.0586
_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^)+(0.1350P)^2^+11.1100P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1769
_refine_ls_wR_factor_ref         0.1922
_reflns_number_gt                8584
_reflns_number_total             11428
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             4070011
_cod_data_source_file            om900568fsup4.cif
_cod_data_source_block           ircodmr
_cod_depositor_comments
;
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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      Pca2(1)
_cod_database_code               4082278