3,3'-Bis(triphenylsilyl)biphenoxide as a Sterically Hindered Ligand on Fe(II), Fe(III), and Cr(II)
Ajay Kayal; Sonny C. Lee; Inorganic Chemistry 41 (2002) 321–330; doi:10.1021/ic010909y

data_4317453
_publ_contact_author_address
;
Department of Chemistry
Princeton University
Princeton
NJ 08544
USA
;
_publ_contact_author_email       sclee@chemvax.princeton.edu
_publ_contact_author_fax         '1 609 258 6746'
_publ_contact_author_name        'Sonny C. Lee'
_publ_contact_author_phone       '1 609 258 3879'
_publ_section_title
;
 3,3'-Bis(triphenylsilyl)biphenoxide as a Sterically Hindered Ligand on
 Fe(II), Fe(III), and Cr(II)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              321
_journal_page_last               330
_journal_paper_doi               10.1021/ic010909y
_journal_volume                  41
_journal_year                    2002
_chemical_formula_moiety         'C56 H52 Cr O4 Si2. 4 C H2 Cl2'
_chemical_formula_sum            'C60 H60 Cl8 Cr O4 Si2'
_chemical_formula_weight         1236.86
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 109.541(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.783(3)
_cell_length_b                   14.335(3)
_cell_length_c                   20.126(3)
_cell_measurement_reflns_used    20746
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      22.47
_cell_measurement_theta_min      1.73
_cell_volume                     5922.6(17)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'NONIUS COLLECT'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'Siemens SHELXTL'
_computing_structure_solution    'Siemens SHELXTL'
_diffrn_ambient_temperature      200(2)
_diffrn_measurement_device       'Nonius KappaCCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0870
_diffrn_reflns_av_sigmaI/netI    0.1194
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            7570
_diffrn_reflns_theta_max         22.47
_diffrn_reflns_theta_min         1.73
_diffrn_standards_decay_%        0
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    0.640
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.387
_exptl_crystal_density_meas      ?
_exptl_crystal_description       block
_exptl_crystal_F_000             2560
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.658
_refine_diff_density_min         -0.403
_refine_diff_density_rms         0.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.021
_refine_ls_goodness_of_fit_obs   1.202
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     676
_refine_ls_number_reflns         7570
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.021
_refine_ls_restrained_S_obs      1.202
_refine_ls_R_factor_all          0.1704
_refine_ls_R_factor_obs          0.0844
_refine_ls_shift/esd_max         0.000
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0970P)^2^+8.7454P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.2239
_refine_ls_wR_factor_obs         0.1867
_reflns_number_observed          4047
_reflns_number_total             7570
_reflns_observed_criterion       I>2\s(I)
_cod_data_source_file            ic010909y_8.cif
_cod_data_source_block           9.4(CH2Cl2)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0970P)^2^+8.7454P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0970P)^2^+8.7454P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        5922.6(16)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4317453