The Extraordinary Ability of Guanidinate Derivatives to Stabilize Higher Oxidation Numbers in Dimetal Units by Modification of Redox Potentials: Structures of Mo25+ and Mo26+ Compounds
F. Albert Cotton; Lee M. Daniels; Carlos A. Murillo; Daren J. Timmons; Chad C. Wilkinson; Journal of the American Chemical Society 124 (2002) 9249–9256; doi:10.1021/ja0266464

data_4115008
_publ_contact_author_address
;  Laboratory for Molecular Structure and Bonding
   Dept. of Chemistry
   Texas A&M University, P.O. Box  30012
   College Station, TX 77842-3012, USA
;
_publ_contact_author_email       cotton@tamu.edu
_publ_contact_author_fax         '(979) 845 9351'
_publ_contact_author_name        'F. A. Cotton'
_publ_contact_author_phone       '(979) 845 4432'
_publ_section_title
;
 The Extraordinary Ability of Guanidinate Derivatives to Stabilize Higher
 Oxidation Numbers in Dimetal Units by Modification of Redox Potentials:
 Structures of Mo25+ and Mo26+ Compounds
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9249
_journal_page_last               9256
_journal_paper_doi               10.1021/ja0266464
_journal_volume                  124
_journal_year                    2002
_chemical_compound_source        synthesis
_chemical_formula_sum            'C28 H48 B Cl F4 Mo2 N12'
_chemical_formula_weight         866.92
_space_group_IT_number           130
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-P 4a 2ac'
_symmetry_space_group_name_H-M   'P 4/n c c :2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.4878(8)
_cell_length_b                   14.4878(8)
_cell_length_c                   16.3787(9)
_cell_measurement_reflns_used    4621
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      27.25
_cell_measurement_theta_min      2.48
_cell_volume                     3437.8(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    XP
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measurement_device       'Bruker SMART'
_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  0.0428
_diffrn_reflns_av_sigmaI/netI    0.0205
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            19881
_diffrn_reflns_theta_max         27.53
_diffrn_reflns_theta_min         1.99
_diffrn_standards_decay_%        0.
_exptl_absorpt_coefficient_mu    0.870
_exptl_absorpt_correction_T_max  0.355
_exptl_absorpt_correction_T_min  0.294
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.675
_exptl_crystal_description       block
_exptl_crystal_F_000             1768
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.225
_refine_diff_density_max         1.006
_refine_diff_density_min         -0.334
_refine_diff_density_rms         0.099
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.161
_refine_ls_goodness_of_fit_obs   1.112
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     112
_refine_ls_number_reflns         1983
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.173
_refine_ls_restrained_S_obs      1.112
_refine_ls_R_factor_all          0.0704
_refine_ls_R_factor_obs          0.0382
_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^)+(0.0500P)^2^+8.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1353
_refine_ls_wR_factor_obs         0.0973
_reflns_number_observed          1185
_reflns_number_total             1988
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ja0266464_s2_1.cif
_cod_data_source_block           compound4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0500P)^2^+8.0000P] 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^)+(0.0500P)^2^+8.0000P] 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        3437.84(53)
_cod_original_sg_symbol_H-M      'P 4/n c c'
_cod_database_code               4115008