2,2'-Dimethoxy-6,6'-dinitrobiphenyl
Miao, Shao-Bin; Deng, Dong-Sheng; Liu, Xian-Ming; Ji, Bao-Ming; Acta Crystallographica Section E 65 (2009) o2314–; doi:10.1107/S1600536809033790

data_2223544
_publ_section_title
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 2,2'-Dimethoxy-6,6'-dinitrobiphenyl
;
_journal_coeditor_code           SI2193
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2314
_journal_paper_doi               10.1107/S1600536809033790
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C14 H12 N2 O6'
_chemical_formula_moiety         'C14 H12 N2 O6'
_chemical_formula_sum            'C14 H12 N2 O6'
_chemical_formula_weight         304.26
_chemical_name_systematic
;
2,2'-Dimethoxy-6,6'-dinitrobiphenyl
;
_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                 115.089(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.236(3)
_cell_length_b                   7.7826(12)
_cell_length_c                   10.9079(17)
_cell_measurement_reflns_used    1790
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      25.70
_cell_measurement_theta_min      2.47
_cell_volume                     1402.0(4)
_computing_cell_refinement       'SAINT (Bruker, 2004)'
_computing_data_collection       'APEX2 (Bruker, 2004)'
_computing_data_reduction        'SAINT (Bruker, 2004)'
_computing_molecular_graphics
'SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009)'
_computing_publication_material
'SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEXII CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.0193
_diffrn_reflns_av_sigmaI/netI    0.0166
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            5102
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.47
_exptl_absorpt_coefficient_mu    0.115
_exptl_absorpt_correction_T_max  0.9786
_exptl_absorpt_correction_T_min  0.9663
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.441
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.136
_refine_diff_density_min         -0.131
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     101
_refine_ls_number_reflns         1298
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0485
_refine_ls_R_factor_gt           0.0352
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0401P)^2^+0.8036P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0873
_refine_ls_wR_factor_ref         0.0968
_reflns_number_gt                1009
_reflns_number_total             1298
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            si2193.cif
_cod_data_source_block           I
_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_enum 1527 2010-12-29 10:47:43Z saulius 

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 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2223544
_cod_database_fobs_code          2223544