Isomers and polymorphs of (<i>E</i>,<i>E</i>)-1,4-bis(nitrophenyl)-2,3-diaza-1,3-butadienes
Glidewell, Christopher; Low, John Nicolson; Skakle, Janet M.S.; Wardell, James L.; Acta Crystallographica Section B 62 (2006) 666–675; doi:10.1107/S010876810601439X

data_2100530
_publ_section_title
;
 Isomers and polymorphs of
 (<i>E</i>,<i>E</i>)-1,4-bis(nitrophenyl)-2,3-diaza-1,3-butadienes
;
_journal_coeditor_code           BM5032
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              666
_journal_page_last               675
_journal_paper_doi               10.1107/S010876810601439X
_journal_volume                  62
_journal_year                    2006
_chemical_formula_moiety         'C14 H10 N4 O4'
_chemical_formula_sum            'C14 H10 N4 O4'
_chemical_formula_weight         298.26
_chemical_name_systematic
;
(E,E)-1-(3-nitrophenyl)-4-(4-nitrophenyl)-2,3-diaza-1,3-butadiene
;
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 123.926(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   30.865(3)
_cell_length_b                   4.7660(5)
_cell_length_c                   21.736(2)
_cell_measurement_reflns_used    2789
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      28.82
_cell_measurement_theta_min      3.03
_cell_volume                     2653.1(5)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL-97 and PRPKAPPA (Ferguson, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.974
_diffrn_measurement_device_type  'Bruker SMART APEX2 CCD diffractometer'
_diffrn_measurement_method       'fine-slice \w scans'
_diffrn_radiation_monochromator  'silicon 111'
_diffrn_radiation_source         'Daresbury SRS station 9.8'
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.6778
_diffrn_reflns_av_R_equivalents  0.0344
_diffrn_reflns_av_sigmaI/netI    0.0386
_diffrn_reflns_limit_h_max       44
_diffrn_reflns_limit_h_min       -43
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            14589
_diffrn_reflns_theta_full        26.50
_diffrn_reflns_theta_max         28.99
_diffrn_reflns_theta_min         2.15
_diffrn_standards_decay_%        5
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.113
_exptl_absorpt_correction_T_max  0.999
_exptl_absorpt_correction_T_min  0.980
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2.10 (Sheldrick, 2003)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.493
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       lath
_exptl_crystal_F_000             1232
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.443
_refine_diff_density_min         -0.261
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.090
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     199
_refine_ls_number_reflns         3961
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.090
_refine_ls_R_factor_all          0.0820
_refine_ls_R_factor_gt           0.0565
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0950P)^2^+1.0330P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1553
_refine_ls_wR_factor_ref         0.1701
_reflns_number_gt                2817
_reflns_number_total             3961
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bm5032.cif
_cod_data_source_block           IV
_cod_depositor_comments
;
The following automatic conversions were performed:
'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' 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:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' 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               2100530