Unusually stable tungstenacyclobutadienes featuring an ONO trianionic pincer-type ligand
O'Reilly, Matthew E.; Ghiviriga, Ion; Abboud, Khalil A.; Veige, Adam S.; Dalton Transactions 42 (2013) 3326–; doi:10.1039/c2dt32653a

data_7020960
_publ_section_title
;
 Unusually stable tungstenacyclobutadienes featuring an ONO trianionic
 pincer-type ligand
;
_journal_issue                   10
_journal_name_full               'Dalton Transactions'
_journal_page_first              3326
_journal_paper_doi               10.1039/c2dt32653a
_journal_volume                  42
_journal_year                    2013
_chemical_formula_sum            'C32 H33 F12 N O2 W'
_chemical_formula_weight         875.44
_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
_audit_update_record
;
2012-07-03 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 104.391(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.6465(14)
_cell_length_b                   9.8689(8)
_cell_length_c                   19.5331(16)
_cell_measurement_reflns_used    9867
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      32.62
_cell_measurement_theta_min      2.33
_cell_volume                     3295.0(5)
_computing_cell_refinement       'Bruker APEX2'
_computing_data_collection       'Bruker APEX2 (Bruker, 2008)'
_computing_data_reduction        'Bruker SAINT (Bruker, 2008)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL (Bruker, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II DUO'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  'Bruker Triumph'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0320
_diffrn_reflns_av_sigmaI/netI    0.0191
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            59838
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.15
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.604
_exptl_absorpt_correction_T_max  0.9314
_exptl_absorpt_correction_T_min  0.5475
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'multiscan (SADABS, Blessing 1995)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.765
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             1720
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.866
_refine_diff_density_min         -0.821
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.089
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     441
_refine_ls_number_reflns         7570
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.089
_refine_ls_R_factor_all          0.0276
_refine_ls_R_factor_gt           0.0220
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0212P)^2^+3.4670P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0482
_refine_ls_wR_factor_ref         0.0496
_reflns_number_gt                6697
_reflns_number_total             7570
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c2dt32653a.txt
_cod_data_source_block           orei35
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7020960