Orthorhombic polymorphs of two <i>trans</i>-4-aminoazoxybenzenes
Ejsmont, Krzysztof; Broda, Małgorzata; Domański, Andrzej; Kyzioł, Janusz B.; Zaleski, Jacek; Acta Crystallographica Section C 58 (2002) o545–o548; doi:10.1107/S0108270102011952

data_2012931
_publ_section_title
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 Orthorhombic polymorphs of two <i>trans</i>-4-aminoazoxybenzenes
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_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o545
_journal_page_last               o548
_journal_paper_doi               10.1107/S0108270102011952
_journal_volume                  58
_journal_year                    2002
_chemical_formula_moiety         'C12 H11 N3 O'
_chemical_formula_sum            'C12 H11 N3 O'
_chemical_formula_weight         213.24
_chemical_name_systematic
;
2-(4-aminophenyl)-1-phenyldiazene 2-oxide
;
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   17.779(4)
_cell_length_b                   5.5350(10)
_cell_length_c                   10.652(2)
_cell_measurement_reflns_used    1630
_cell_measurement_temperature    90.0(2)
_cell_measurement_theta_max      25.50
_cell_measurement_theta_min      3.68
_cell_volume                     1048.2(4)
_computing_cell_refinement       'KM-4 CCD Software'
_computing_data_collection       'KM-4 CCD Software (Kuma Diffraction, 1999)'
_computing_data_reduction        'KM-4 CCD Software'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1990)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      90.00(10)
_diffrn_detector_area_resol_mean '1024x1024 with blocks 2x2'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type
'Kuma KM-4 with two-dimensional CCD area-detector'
_diffrn_measurement_method       \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  0.047
_diffrn_reflns_av_sigmaI/netI    0.030
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            6087
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         3.68
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.351
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             448
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.14
_refine_diff_density_min         -0.16
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     189
_refine_ls_number_reflns         1033
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.035
_refine_ls_R_factor_gt           0.031
_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^)+(0.0422P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.065
_refine_ls_wR_factor_ref         0.067
_reflns_number_gt                971
_reflns_number_total             1033
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gd1210.cif
_cod_data_source_block           II
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
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_cod_database_code               2012931
_cod_database_fobs_code          2012931