Strong reducing agents containing dimolybdenum Mo2(4+) units and their oxidized cations with Mo2(5+/6+) cores stabilized by bicyclic guanidinate anions with a seven-membered ring.
Cotton, F. Albert; Murillo, Carlos A.; Wang, Xiaoping; Wilkinson, Chad C.; Dalton transactions (Cambridge, England : 2003)  (2006) 4623–4631; doi:10.1039/b608422b

data_7007660
_publ_section_title
;
 Strong reducing agents containing dimolybdenum Mo2(4+) units and their
 oxidized cations with Mo2(5+/6+) cores stabilized by bicyclic
 guanidinate anions with a seven-membered ring.
;
_journal_issue                   38
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4623
_journal_page_last               4631
_journal_paper_doi               10.1039/b608422b
_journal_year                    2006
_chemical_formula_moiety         'C28 H48 Cl2 Mo2 N12'
_chemical_formula_sum            'C28 H48 Cl2 Mo2 N12'
_chemical_formula_weight         815.56
_chemical_name_systematic
;
?
;
_space_group_IT_number           87
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4'
_symmetry_space_group_name_H-M   'I 4/m'
_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            2
_cell_length_a                   10.0675(15)
_cell_length_b                   10.0675(15)
_cell_length_c                   15.797(5)
_cell_measurement_reflns_used    2213
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      27.306
_cell_measurement_theta_min      2.394
_cell_volume                     1601.1(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    XP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  '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  0.0388
_diffrn_reflns_av_sigmaI/netI    0.0305
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            4873
_diffrn_reflns_theta_full        27.44
_diffrn_reflns_theta_max         27.44
_diffrn_reflns_theta_min         2.40
_exptl_absorpt_coefficient_mu    0.992
_exptl_absorpt_correction_T_max  0.9160
_exptl_absorpt_correction_T_min  0.8614
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.692
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       block
_exptl_crystal_F_000             836
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.644
_refine_diff_density_min         -0.468
_refine_diff_density_rms         0.078
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.159
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     94
_refine_ls_number_reflns         944
_refine_ls_number_restraints     33
_refine_ls_restrained_S_all      1.171
_refine_ls_R_factor_all          0.0502
_refine_ls_R_factor_gt           0.0366
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0247P)^2^+4.4565P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0763
_refine_ls_wR_factor_ref         0.0825
_reflns_number_gt                804
_reflns_number_total             944
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            b608422b.txt
_cod_data_source_block           3
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
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      I4/m
_cod_database_code               7007660