How to Make a Major Shift in a Redox Potential: Ligand Control of the Oxidation State of Dimolybdenum Units
F. Albert Cotton; Lee M. Daniels; Chun Y. Liu; Carlos A. Murillo; Arthur J. Schultz; Xiaoping Wang; Inorganic Chemistry 41 (2002) 4232–4238; doi:10.1021/ic025632w

data_4318344
_publ_section_title
;
 How to Make a Major Shift in a Redox Potential: Ligand Control of the
 Oxidation State of Dimolybdenum Units
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4232
_journal_page_last               4238
_journal_paper_doi               10.1021/ic025632w
_journal_volume                  41
_journal_year                    2002
_chemical_compound_source        synthesis
_chemical_formula_structural     (TBA)2[Mo2(Mo(CO)4(PhPO2)2)2]
_chemical_formula_sum            'C64 H92 Mo4 N2 O16 P4'
_chemical_formula_weight         1653.04
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 98.7820(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.9530(8)
_cell_length_b                   15.7847(10)
_cell_length_c                   18.0865(11)
_cell_measurement_reflns_used    6101
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.22
_cell_volume                     3654.6(4)
_computing_cell_refinement       SAINT
_computing_data_collection       SMART
_computing_data_reduction        SAINT
_computing_molecular_graphics    XP
_computing_publication_material  'SHELXl-93(Sheldrick, 1993)'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measurement_device       'Bruker SMART 1000'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0202
_diffrn_reflns_av_sigmaI/netI    0.0247
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            22578
_diffrn_reflns_theta_max         27.52
_diffrn_reflns_theta_min         1.72
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.820
_exptl_absorpt_correction_T_max  0.9281
_exptl_absorpt_correction_T_min  0.8084
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            'dark red'
_exptl_crystal_density_diffrn    1.502
_exptl_crystal_density_meas      ?
_exptl_crystal_description       block
_exptl_crystal_F_000             1692
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.554
_refine_diff_density_min         -0.283
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.030
_refine_ls_goodness_of_fit_obs   1.049
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     406
_refine_ls_number_reflns         8326
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_restrained_S_obs      1.049
_refine_ls_R_factor_all          0.0334
_refine_ls_R_factor_obs          0.0244
_refine_ls_shift/esd_max         -0.003
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0300P)^2^+1.00P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0623
_refine_ls_wR_factor_obs         0.0577
_reflns_number_observed          6967
_reflns_number_total             8327
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ic025632w_s2_1.cif
_cod_data_source_block           1a
_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^)+(0.0300P)^2^+1.00P] 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^)+(0.0300P)^2^+1.00P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               4318344