Synthesis of rhodium(I) and iridium(I) complexes of chiral N-heterocyclic carbenes and their application to asymmetric transfer hydrogenation
Dyson, Gavin; Frison, Jean-Cédric; Whitwood, Adrian C.; Douthwaite, Richard E.; Dalton Transactions  (2009) 7141–; doi:10.1039/b909290k

data_7001978
_publ_section_title
;
 Synthesis of rhodium(I) and iridium(I) complexes of chiral
 N-heterocyclic carbenes and their application to asymmetric transfer
 hydrogenation
;
_journal_issue                   35
_journal_name_full               'Dalton Transactions'
_journal_page_first              7141
_journal_paper_doi               10.1039/b909290k
_journal_year                    2009
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C41 H57 Cl Ir N3 O'
_chemical_formula_sum            'C41 H57 Cl Ir N3 O'
_chemical_formula_weight         835.55
_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                   12.7958(7)
_cell_length_b                   16.4449(9)
_cell_length_c                   18.4264(10)
_cell_measurement_reflns_used    8481
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      29.92
_cell_measurement_theta_min      2.30
_cell_volume                     3877.4(4)
_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      110(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0317
_diffrn_reflns_av_sigmaI/netI    0.0344
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            58607
_diffrn_reflns_theta_full        30.05
_diffrn_reflns_theta_max         30.05
_diffrn_reflns_theta_min         1.66
_exptl_absorpt_coefficient_mu    3.546
_exptl_absorpt_correction_T_max  0.730
_exptl_absorpt_correction_T_min  0.555
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2.03; (Sheldrick)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.431
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       needle
_exptl_crystal_F_000             1704
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.09
_refine_diff_density_max         1.163
_refine_diff_density_min         -0.299
_refine_diff_density_rms         0.072
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.009(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.973
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     452
_refine_ls_number_reflns         11251
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.973
_refine_ls_R_factor_all          0.0206
_refine_ls_R_factor_gt           0.0186
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0124P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0374
_refine_ls_wR_factor_ref         0.0377
_reflns_number_gt                10675
_reflns_number_total             11251
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b909290k.txt
_cod_data_source_block           comple6b
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7001978