Iron Complexes for the Catalytic Transfer Hydrogenation of Acetophenone: Steric and Electronic Effects Imposed by Alkyl Substituents at Phosphorus
Paraskevi O. Lagaditis; Alan J. Lough; Robert H. Morris; Inorganic Chemistry 49 (2010) 10057–10066; doi:10.1021/ic101366z

data_4316954
_publ_section_title
;
 Iron Complexes for the Catalytic Transfer Hydrogenation of Acetophenone:
 Steric and Electronic Effects Imposed by Alkyl Substituents at Phosphorus
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              10057
_journal_page_last               10066
_journal_paper_doi               10.1021/ic101366z
_journal_volume                  49
_journal_year                    2010
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C31 H46 Br Fe N2 O P2, C24 H20 B'
_chemical_formula_sum            'C55 H66 B Br Fe N2 O P2'
_chemical_formula_weight         979.61
_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                   12.8978(3)
_cell_length_b                   16.6086(3)
_cell_length_c                   23.5406(5)
_cell_measurement_reflns_used    42429
_cell_measurement_temperature    150(1)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.6
_cell_volume                     5042.74(18)
_computing_cell_refinement       'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius B.V., 1997-2002)'
_computing_data_reduction        Denzo-SMN
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  'SHELXTL V6.1'
_computing_structure_refinement  'SHELXTL V6.1 (Sheldrick, 2008)'
_computing_structure_solution    'SIR-92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150(1)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f scans and \w scans withy \k offsets'
_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  0.0907
_diffrn_reflns_av_sigmaI/netI    0.1097
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            42429
_diffrn_reflns_theta_full        27.54
_diffrn_reflns_theta_max         27.54
_diffrn_reflns_theta_min         2.60
_exptl_absorpt_coefficient_mu    1.195
_exptl_absorpt_correction_T_max  0.838
_exptl_absorpt_correction_T_min  0.776
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements 
 Sortav (Blessing 1995)
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.290
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2056
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.605
_refine_diff_density_min         -0.535
_refine_diff_density_rms         0.078
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.012(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     576
_refine_ls_number_reflns         11494
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.1111
_refine_ls_R_factor_gt           0.0553
_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^)+(0.0524P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1022
_refine_ls_wR_factor_ref         0.1183
_reflns_number_gt                7511
_reflns_number_total             11494
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic101366z_si_001_4.cif
_cod_data_source_block           13
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
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_cod_database_code               4316954