Metal-Metal Multiply Bonded Complexes of Technetium. 5.1 Tris and Tetrakis(formamidinato) Complexes of Ditechnetium
F. Albert Cotton; Steven C. Haefner; Alfred P. Sattelberger; Inorganic Chemistry 35 (1996) 7350–7357; doi:10.1021/ic960535m

data_4323989
_publ_section_title
;
 Metal-Metal Multiply Bonded Complexes of Technetium. 5.1 Tris and
 Tetrakis(formamidinato) Complexes of Ditechnetium
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7350
_journal_page_last               7357
_journal_paper_doi               10.1021/ic960535m
_journal_volume                  35
_journal_year                    1996
_chemical_compound_source        synthesis
_chemical_formula_moiety         'C52 H44 Cl N8 Tc2, (C7 H8)'
_chemical_formula_structural     'Tc2 Cl (C13 H11 N2), (C7 H8)'
_chemical_formula_sum            'C59 H52 Cl N8 Tc2'
_chemical_formula_weight         1104.54
_chemical_name_systematic
; 
 tetra(\m-diphenylformamidinate)chloro ditechnetium (II,III)
 toluene solvate
;
_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                   15.245(2)
_cell_length_b                   15.245(2)
_cell_length_c                   21.832(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      18
_cell_measurement_theta_min      9
_cell_volume                     5074.0(10)
_computing_cell_refinement       TEXSAN
_computing_data_collection       TEXSAN
_computing_data_reduction        TEXSAN
_computing_molecular_graphics    ORTEP
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       'RIGAKU AFC5R'
_diffrn_measurement_method       \q-2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           Cu
_diffrn_radiation_wavelength     1.54060
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0744
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            1897
_diffrn_reflns_theta_max         60.00
_diffrn_reflns_theta_min         4.05
_diffrn_standards_decay_%        1.7
_diffrn_standards_interval_count 250
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    5.279
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.75
_exptl_absorpt_correction_type   'empirical (\y scan)'
_exptl_crystal_colour            red/orange
_exptl_crystal_density_diffrn    1.446
_exptl_crystal_density_meas      ?
_exptl_crystal_description       plate
_exptl_crystal_F_000             2260
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.401
_refine_diff_density_min         -0.903
_refine_diff_density_rms         0.078
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.089
_refine_ls_goodness_of_fit_obs   1.283
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     169
_refine_ls_number_reflns         1447
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.102
_refine_ls_restrained_S_obs      1.282
_refine_ls_R_factor_all          0.1269
_refine_ls_R_factor_obs          0.0482
_refine_ls_shift/esd_max         0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0691P)^2^+2.7795P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1592
_refine_ls_wR_factor_obs         0.1246
_reflns_number_observed          944
_reflns_number_total             1897
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ic960535m_1.cif
_cod_data_source_block           2
_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^)+(0.0691P)^2^+2.7795P] 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^)+(0.0691P)^2^+2.7795P] 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        5074.1(9)
_cod_original_sg_symbol_H-M      'P 4/n c c'
_cod_database_code               4323989