Facile Thermal W‒W Bond Homolysis in the N-Heterocyclic Carbene Containing Tungsten Dimer [CpW(CO)2(IMe)]2
van der Eide, Edwin F.; Liu, Tianbiao; Camaioni, Donald M.; Walter, Eric D.; Bullock, R. Morris; Organometallics 31 (2012) 1775–; doi:10.1021/om201162g

data_4076391
_publ_section_title
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 Facile Thermal W--W Bond Homolysis in the N-Heterocyclic Carbene
 Containing Tungsten Dimer [CpW(CO)2(IMe)]2
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_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              1775
_journal_paper_doi               10.1021/om201162g
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C10 H14 O2 P W 1-, C5 H9 N2 1+'
_chemical_formula_sum            'C15 H23 N2 O2 P W'
_chemical_formula_weight         478.17
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           9
_space_group_name_Hall           'C -2yc'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 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                 111.076(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.3961(4)
_cell_length_b                   24.1322(15)
_cell_length_c                   9.1451(5)
_cell_measurement_reflns_used    9896
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.39
_cell_measurement_theta_min      2.73
_cell_volume                     1728.99(17)
_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 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0228
_diffrn_reflns_av_sigmaI/netI    0.0273
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            13396
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         1.69
_exptl_absorpt_coefficient_mu    6.779
_exptl_absorpt_correction_T_max  0.6483
_exptl_absorpt_correction_T_min  0.4504
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; (Sheldrick, 2006)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.837
_exptl_crystal_description       block
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.756
_refine_diff_density_min         -0.946
_refine_diff_density_rms         0.070
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.019(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     195
_refine_ls_number_reflns         3430
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0121
_refine_ls_R_factor_gt           0.0120
_refine_ls_shift/su_max          0.010
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0277
_refine_ls_wR_factor_ref         0.0278
_reflns_number_gt                3404
_reflns_number_total             3430
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om201162g_si_002.cif
_cod_data_source_block           edw
_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.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      Cc
_cod_database_code               4076391