Binuclear biscarbene complexes of furan.
Crause, Chantelle; Görls, Helmar; Lotz, Simon; Dalton transactions (Cambridge, England : 2003)  (2005) 1649–1657; doi:10.1039/b419148j

data_7008211
_publ_section_title
;
 Binuclear biscarbene complexes of furan.
;
_journal_issue                   9
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1649
_journal_page_last               1657
_journal_paper_doi               10.1039/b419148j
_journal_year                    2005
_chemical_formula_sum            'C20 H12 O13 W2'
_chemical_formula_weight         828.00
_chemical_melting_point          'decompose on heating'
_chemical_name_systematic
;
?
;
_space_group_IT_number           12
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 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                 97.435(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   23.8784(9)
_cell_length_b                   7.6038(3)
_cell_length_c                   13.3500(6)
_cell_measurement_temperature    183(2)
_cell_volume                     2403.53(17)
_computing_cell_refinement       DENZO
_computing_data_collection       COLLECT
_computing_data_reduction        DENZO
_computing_molecular_graphics    SHELXTL/PC
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      183(2)
_diffrn_measured_fraction_theta_full 0.934
_diffrn_measured_fraction_theta_max 0.934
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       '(phi- + omega-scan)'
_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  0.0735
_diffrn_reflns_av_sigmaI/netI    0.0564
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            9142
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.15
_exptl_absorpt_coefficient_mu    9.629
_exptl_absorpt_correction_T_max  0.286
_exptl_absorpt_correction_T_min  0.197
_exptl_absorpt_correction_type   semi-empirical
_exptl_crystal_colour            red-orange
_exptl_crystal_density_diffrn    2.288
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1536
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.772
_refine_diff_density_min         -1.397
_refine_diff_density_rms         0.192
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.977
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     187
_refine_ls_number_reflns         2775
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.977
_refine_ls_R_factor_all          0.0336
_refine_ls_R_factor_gt           0.0269
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0224P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0586
_refine_ls_wR_factor_ref         0.0599
_reflns_number_gt                2283
_reflns_number_total             2775
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b419148j.txt
_cod_data_source_block           FO1427
_cod_original_cell_volume        2403.5(2)
_cod_original_sg_symbol_H-M      C2/m
_cod_database_code               7008211