Stereoelectronic Factors in Iron Catalysis: Synthesis and Characterization of Aryl-Substituted Iron(II) Carbonyl P‒N‒N‒P Complexes and Their Use in the Asymmetric Transfer Hydrogenation of Ketones
Sues, Peter E.; Lough, Alan J.; Morris, Robert H.; Organometallics 30 (2011) 4418–; doi:10.1021/om2005172

data_4063600
_publ_section_title
;
 Stereoelectronic Factors in Iron Catalysis: Synthesis and
 Characterization of Aryl-Substituted Iron(II) Carbonyl P--N--N--P
 Complexes and Their Use in the Asymmetric Transfer Hydrogenation of
 Ketones
;
_journal_issue                   16
_journal_name_full               Organometallics
_journal_page_first              4418
_journal_paper_doi               10.1021/om2005172
_journal_volume                  30
_journal_year                    2011
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C50 H52 Fe N4 P2, 2(C24 H20 B), C2 H3 N'
_chemical_formula_sum            'C100 H95 B2 Fe N5 P2'
_chemical_formula_weight         1506.22
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           1
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                101.60(3)
_cell_angle_beta                 104.57(3)
_cell_angle_gamma                118.80(3)
_cell_formula_units_Z            4
_cell_length_a                   21.887(4)
_cell_length_b                   22.196(4)
_cell_length_c                   22.358(5)
_cell_measurement_reflns_used    100130
_cell_measurement_temperature    150(1)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.6
_cell_volume                     8521(6)
_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 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f scans and \w scans with \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  0.0770
_diffrn_reflns_av_sigmaI/netI    0.1469
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            100130
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.64
_exptl_absorpt_coefficient_mu    0.264
_exptl_absorpt_correction_T_max  0.992
_exptl_absorpt_correction_T_min  0.760
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements 
 Sortav (Blessing 1995)
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.174
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3184
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.12
_platon_squeeze_details
;
During the 
refinement of the structure, electron density peaks were located 
that were believed to be highly disordered 
solvent molecules (possibly Ether/Acetonitrile/methanol). Attempts 
made to model the solvent molecule were not successful. 
The SQUEEZE option in PLATON (Spek, 2009) indicated there was a 
large solvent cavity. In the final cycles of refinement, 
this contribution to the 
electron density was removed from the observed data. The 
density, the F(000) value, the molecular weight and the formula are 
given without taking into account the results obtained with the 
SQUEEZE option PLATON (Spek, 2009). Similar treatments of disordered 
solvent molecules were carried out by St\"ahler et al. (2001), 
Cox et al. (2003), Mohamed et al. (2003) and Athimoolam et al. (2005). 
References: 
  
Spek, A. L. (2003). J. Appl. Cryst. 36, 7-13 
  
Athimoolam, S., Kumar, J., Ramakrishnan, V. & Rajaram, R.K. (2005). 
Acta Cryst. E61, m2014-m2017. 
  
Cox, J.P., Kumarasammy, Y., Nahar, L., Sarkar D.S. & Shoeb, M. 
(2003). Acta Cryst. E59, o975-o977. 
  
Mohamed, A.A., Krause Bauer, A.J., Bruce, E.A. & Bruce M.R.M. 
(2003). Acta Cryst. C59, m84-m86. 
  
St\"ahler, R., N\"ather, C. & Bensch, W. (2001). Acta Cryst. 
C57, 26-27. 

;
_refine_diff_density_max         0.686
_refine_diff_density_min         -0.538
_refine_diff_density_rms         0.077
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.086(17)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.966
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     3928
_refine_ls_number_reflns         63043
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      0.966
_refine_ls_R_factor_all          0.1473
_refine_ls_R_factor_gt           0.0725
_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^)+(0.0845P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1589
_refine_ls_wR_factor_ref         0.1872
_reflns_number_gt                34879
_reflns_number_total             63043
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om2005172_si_002.cif
_cod_data_source_block           3b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        8521(3)
_cod_database_code               4063600