Facile C—N Bond Cleavage Promoted by Cuprous Oxide: Formation of C—C-Coupled Biimidazole from Its Methylene-Bridged Congener
Sabiah, Shahulhameed; Lee, Chen-Shiang; Hwang, Wen-Shu; Lin, Ivan J. B.; Organometallics 29 (2010) 290–293; doi:10.1021/om9010406

data_4063346
_publ_section_title
;
 Facile C---N Bond Cleavage Promoted by Cuprous Oxide:
 Formation of C---C-Coupled Biimidazole from Its Methylene-Bridged Congener
;
_journal_coden_ASTM              ORGND7
_journal_issue                   2
_journal_name_full               Organometallics
_journal_page_first              290
_journal_page_last               293
_journal_paper_doi               10.1021/om9010406
_journal_volume                  29
_journal_year                    2010
_chemical_formula_sum            'C16 H20 Cl4 Cu2 N8'
_chemical_formula_weight         593.28
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 113.3380(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.0805(6)
_cell_length_b                   10.8127(4)
_cell_length_c                   14.4679(6)
_cell_measurement_temperature    296(2)
_cell_volume                     2309.77(16)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0265
_diffrn_reflns_av_sigmaI/netI    0.0158
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            13866
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.33
_exptl_absorpt_coefficient_mu    2.325
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.706
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1192
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.424
_refine_diff_density_min         -0.373
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.220
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         2152
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.220
_refine_ls_R_factor_all          0.0272
_refine_ls_R_factor_gt           0.0247
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0410P)^2^+1.3978P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0731
_refine_ls_wR_factor_ref         0.0762
_reflns_number_gt                1971
_reflns_number_total             2152
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om9010406_si_002.cif
_cod_data_source_block           714906
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

 Updated bibliographic information.

 Antanas Vaitkus,
 2019-09-23
;
_cod_original_cell_volume        2309.77(15)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4063346