Synthesis, coordination behaviour, structural features and use in asymmetric hydrogenations of bifep-type biferrocenes
Espino, Gustavo; Xiao, Li; Puchberger, Michael; Mereiter, Kurt; Spindler, Felix; Manzano, Blanca R.; Jalón, Félix A.; Weissensteiner, Walter; Dalton Transactions  (2009) 2751–2763; doi:10.1039/b816544k

data_7000979
_publ_section_title
;
 Synthesis, coordination behaviour, structural features and use in
 asymmetric hydrogenations of bifep-type biferrocenes
;
_journal_issue                   15
_journal_name_full               'Dalton Transactions'
_journal_page_first              2751
_journal_page_last               2763
_journal_paper_doi               10.1039/b816544k
_journal_year                    2009
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C44 H36 Fe2 P2'
_chemical_formula_sum            'C44 H36 Fe2 P2'
_chemical_formula_weight         738.37
_chemical_name_common
(Sp,Sp)-2,2''-Bis(diphenylphosphino)-1,1''-biferrocene
_chemical_name_systematic
;
(Sp,Sp)-2,2"-Bis(diphenylphosphino)-1,1"-biferrocene
;
_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                   8.5119(7)
_cell_length_b                   18.2877(15)
_cell_length_c                   22.2993(19)
_cell_measurement_reflns_used    9739
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.81
_cell_measurement_theta_min      2.23
_cell_volume                     3471.2(5)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT, SADABS, XPREP'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0315
_diffrn_reflns_av_sigmaI/netI    0.0396
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            27639
_diffrn_reflns_theta_full        30.04
_diffrn_reflns_theta_max         30.04
_diffrn_reflns_theta_min         2.14
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.960
_exptl_absorpt_correction_T_max  0.76
_exptl_absorpt_correction_T_min  0.64
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'program SADABS'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.413
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1528
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.789
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.089
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.017(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.108
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     433
_refine_ls_number_reflns         10101
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.108
_refine_ls_R_factor_all          0.0519
_refine_ls_R_factor_gt           0.0472
_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^)+(0.0597P)^2^+0.1101P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1040
_refine_ls_wR_factor_ref         0.1064
_reflns_number_gt                9347
_reflns_number_total             10101
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b816544k.txt
_cod_data_source_block           1-903
_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               7000979