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_7007662
_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         'C32 H56 Cl Mo2 N12'
_chemical_formula_sum            'C32 H56 Cl Mo2 N12'
_chemical_formula_weight         836.22
_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-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.1897(10)
_cell_length_b                   14.1897(10)
_cell_length_c                   17.504(3)
_cell_measurement_reflns_used    988
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      43.749
_cell_measurement_theta_min      5.0535
_cell_volume                     3524.4(7)
_computing_cell_refinement       FRAMBO
_computing_data_collection       FRAMBO
_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      110(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker GADDS'
_diffrn_measurement_method       \w-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.1694
_diffrn_reflns_av_sigmaI/netI    0.0599
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            24701
_diffrn_reflns_theta_full        59.06
_diffrn_reflns_theta_max         59.06
_diffrn_reflns_theta_min         4.41
_exptl_absorpt_coefficient_mu    6.859
_exptl_absorpt_correction_T_max  0.9346
_exptl_absorpt_correction_T_min  0.5471
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.576
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       needle
_exptl_crystal_F_000             1732
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.01
_refine_diff_density_max         1.086
_refine_diff_density_min         -1.086
_refine_diff_density_rms         0.264
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.925
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     131
_refine_ls_number_reflns         1276
_refine_ls_number_restraints     51
_refine_ls_restrained_S_all      0.909
_refine_ls_R_factor_all          0.0892
_refine_ls_R_factor_gt           0.0362
_refine_ls_shift/su_max          0.010
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0786P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0860
_refine_ls_wR_factor_ref         0.1307
_reflns_number_gt                651
_reflns_number_total             1276
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b608422b.txt
_cod_data_source_block           5
_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_cell_volume        3524.3(6)
_cod_original_sg_symbol_H-M      'P 4/n c c'
_cod_database_code               7007662