A new polymorph of benzene-1,2-diamine: isomorphism with 2-aminophenol and two-dimensional isostructurality of polymorphs
Czapik, Agnieszka; Gdaniec, Maria; Acta Crystallographica Section C 66 (2010) o198–o201; doi:10.1107/S0108270110008474

data_2017606
_publ_section_title
;
 A new polymorph of benzene-1,2-diamine: isomorphism with 2-aminophenol
 and two-dimensional isostructurality of polymorphs
;
_journal_coeditor_code           FG3158
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o198
_journal_page_last               o201
_journal_paper_doi               10.1107/S0108270110008474
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C6 H8 N2'
_chemical_formula_moiety         'C6 H8 N2'
_chemical_formula_sum            'C6 H8 N2'
_chemical_formula_weight         108.14
_chemical_name_systematic
;
benzene-1,2-diamine
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   7.5330(17)
_cell_length_b                   7.8350(15)
_cell_length_c                   20.098(4)
_cell_measurement_reflns_used    1955
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.81
_cell_measurement_theta_min      2.89
_cell_volume                     1186.2(4)
_computing_cell_refinement       'CrysAlis Pro (Oxford Diffraction, 2009)'
_computing_data_collection       'CrysAlis Pro (Oxford Diffraction, 2009)'
_computing_data_reduction        'CrysAlis Pro (Oxford Diffraction, 2009)'
_computing_molecular_graphics
;
ORTEP-3 for Windows (Farrugia, 1997) and Mercury (Macrae <i>et al.</i>,
2006)
;
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Oxford XcaliburE 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  0.0288
_diffrn_reflns_av_sigmaI/netI    0.0306
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            6421
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         4.27
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.77586
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrysAlis Pro; Oxford Diffraction, 2009)'
_exptl_crystal_colour            pale-pink
_exptl_crystal_density_diffrn    1.211
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             464
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.105
_refine_diff_density_min         -0.200
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.935
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     89
_refine_ls_number_reflns         1204
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.935
_refine_ls_R_factor_all          0.0588
_refine_ls_R_factor_gt           0.0355
_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^)+(0.0540P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0827
_refine_ls_wR_factor_ref         0.0883
_reflns_number_gt                817
_reflns_number_total             1204
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fg3158.cif
_cod_data_source_block           II
_cod_database_code               2017606
_cod_database_fobs_code          2017606