First crystallographic elucidation of a high-valent molybdenum oxo N-heterocyclic carbene complex [CpMo(VI)O(2)(IBz)](2)[Mo(6)O(19)].
Li, Shenyu; Wang, Zhe; Hor, T. S. Andy; Zhao, Jin; Dalton transactions (Cambridge, England : 2003) 41 (2012) 1454–1456; doi:10.1039/c2dt11616b

data_7018034
_publ_section_title
;
 First crystallographic elucidation of a high-valent molybdenum oxo
 N-heterocyclic carbene complex [CpMo(VI)O(2)(IBz)](2)[Mo(6)O(19)].
;
_journal_issue                   5
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1454
_journal_page_last               1456
_journal_paper_doi               10.1039/c2dt11616b
_journal_volume                  41
_journal_year                    2012
_chemical_formula_sum            'C44 H53 Mo6 N5 O19'
_chemical_formula_weight         1531.55
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 96.2250(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.7001(5)
_cell_length_b                   15.3922(7)
_cell_length_c                   15.8533(7)
_cell_measurement_reflns_used    7323
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.33
_cell_volume                     2595.6(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0291
_diffrn_reflns_av_sigmaI/netI    0.0329
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            17932
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.85
_exptl_absorpt_coefficient_mu    1.484
_exptl_absorpt_correction_T_max  0.8905
_exptl_absorpt_correction_T_min  0.5614
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs, (Sheldrick 2001)'
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.960
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Rod
_exptl_crystal_F_000             1512
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.810
_refine_diff_density_min         -0.523
_refine_diff_density_rms         0.125
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.129
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     355
_refine_ls_number_reflns         5957
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.129
_refine_ls_R_factor_all          0.0385
_refine_ls_R_factor_gt           0.0327
_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^)+(0.0396P)^2^+3.2796P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0770
_refine_ls_wR_factor_ref         0.0845
_reflns_number_gt                5344
_reflns_number_total             5957
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt11616b.txt
_cod_data_source_block           9589
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' 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_values 1715 2011-07-08 13:25:40Z adriana 

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 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7018034