#------------------------------------------------------------------------------
#$Date: 2017-10-13 11:03:29 +0300 (Fri, 13 Oct 2017) $
#$Revision: 201974 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/21/86/2218682.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2218682
loop_
_publ_author_name
'Chen, Fang'
'Ye, Heng-Yun'
_publ_section_title
rac-(4aR,8aR)-2,3-Diphenyl-4a,5,6,7,8,8a-hexahydroquinoxaline
_journal_coeditor_code           FB2093
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1191
_journal_paper_doi               10.1107/S1600536808016103
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C20 H20 N2'
_chemical_formula_moiety         'C20 H20 N2'
_chemical_formula_sum            'C20 H20 N2'
_chemical_formula_weight         288.38
_chemical_melting_point_gt       447
_chemical_melting_point_lt       453
_chemical_name_systematic
;
rac-(4aR,8aR)-2,3-Diphenyl-4a,5,6,7,8,8a-
hexahydroquinoxaline
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   difmap
_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            4
_cell_length_a                   15.278(3)
_cell_length_b                   18.388(4)
_cell_length_c                   5.6638(11)
_cell_measurement_reflns_used    13431
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.49
_cell_measurement_theta_min      3.32
_cell_volume                     1591.1(6)
_computing_cell_refinement       'CrystalClear (Rigaku, 2005)'
_computing_data_collection       'CrystalClear (Rigaku, 2005)'
_computing_data_reduction        'CrystalClear (Rigaku, 2005)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 13.6612
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku SCXmini'
_diffrn_measurement_method       ω
_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  0.0711
_diffrn_reflns_av_sigmaI/netI    0.0395
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            16117
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.47
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8305
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrystalClear; Rigaku, 2005)'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.204
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.129
_refine_diff_density_min         -0.165
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.101
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_constraints    80
_refine_ls_number_parameters     199
_refine_ls_number_reflns         2004
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.101
_refine_ls_R_factor_all          0.0664
_refine_ls_R_factor_gt           0.0474
_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/[σ²(Fo²)+(0.0344P)²+0.1949P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0925
_refine_ls_wR_factor_ref         0.0999
_reflns_number_gt                1558
_reflns_number_total             2004
_reflns_threshold_expression     I>2σ(I)
_cod_data_source_file            fb2093.cif
_cod_data_source_block           I
_cod_original_cell_volume        1591.2(5)
_cod_database_code               2218682
_cod_database_fobs_code          2218682
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, z+1/2'
'x+1/2, -y+1/2, z'
'-x+1/2, y+1/2, z+1/2'
loop_
_atom_site_type_symbol
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_occupancy
C C1 0.59529(17) 0.36737(13) 0.4260(5) 0.0432(6) Uani d . 1
H H1A 0.5643 0.3988 0.5377 0.052 Uiso calc R 1
C C2 0.55215(16) 0.29231(13) 0.4296(6) 0.0531(7) Uani d . 1
H H2A 0.5849 0.2594 0.3290 0.064 Uiso calc R 1
H H2B 0.5533 0.2731 0.5890 0.064 Uiso calc R 1
C C3 0.45847(19) 0.29648(16) 0.3444(7) 0.0626(9) Uani d . 1
H H3A 0.4241 0.3243 0.4566 0.075 Uiso calc R 1
H H3B 0.4341 0.2478 0.3366 0.075 Uiso calc R 1
C C4 0.4523(2) 0.33176(15) 0.1036(7) 0.0666(10) Uani d . 1
H H4A 0.3913 0.3367 0.0596 0.080 Uiso calc R 1
H H4B 0.4805 0.3008 -0.0123 0.080 Uiso calc R 1
C C5 0.49552(18) 0.40639(14) 0.1012(7) 0.0572(8) Uani d . 1
H H5A 0.4938 0.4262 -0.0575 0.069 Uiso calc R 1
H H5B 0.4635 0.4391 0.2041 0.069 Uiso calc R 1
C C6 0.58925(16) 0.40112(12) 0.1829(5) 0.0413(6) Uani d . 1
H H6A 0.6214 0.3702 0.0718 0.050 Uiso calc R 1
C C7 0.69908(15) 0.47944(12) 0.3141(5) 0.0362(6) Uani d . 1
C C8 0.73733(14) 0.55333(12) 0.3446(5) 0.0362(6) Uani d . 1
C C9 0.72510(16) 0.60532(13) 0.1701(5) 0.0429(6) Uani d . 1
H H9A 0.6967 0.5929 0.0307 0.051 Uiso calc R 1
C C10 0.75498(16) 0.67548(14) 0.2028(6) 0.0482(7) Uani d . 1
H H10A 0.7464 0.7100 0.0849 0.058 Uiso calc R 1
C C11 0.79687(17) 0.69479(14) 0.4061(6) 0.0514(7) Uani d . 1
H H11A 0.8164 0.7423 0.4269 0.062 Uiso calc R 1
C C12 0.81003(18) 0.64389(14) 0.5800(6) 0.0532(7) Uani d . 1
H H12A 0.8391 0.6568 0.7180 0.064 Uiso calc R 1
C C13 0.78012(17) 0.57348(13) 0.5501(5) 0.0453(7) Uani d . 1
H H13A 0.7888 0.5394 0.6690 0.054 Uiso calc R 1
C C14 0.73617(15) 0.41439(13) 0.4428(5) 0.0389(6) Uani d . 1
C C15 0.83132(16) 0.40920(13) 0.4971(5) 0.0397(6) Uani d . 1
C C16 0.89364(17) 0.43624(14) 0.3435(6) 0.0484(7) Uani d . 1
H H16A 0.8761 0.4596 0.2058 0.058 Uiso calc R 1
C C17 0.98203(18) 0.42881(15) 0.3928(7) 0.0583(8) Uani d . 1
H H17A 1.0234 0.4468 0.2875 0.070 Uiso calc R 1
C C18 1.0086(2) 0.39503(15) 0.5962(7) 0.0592(9) Uani d . 1
H H18A 1.0680 0.3903 0.6296 0.071 Uiso calc R 1
C C19 0.94719(19) 0.36810(15) 0.7508(6) 0.0577(8) Uani d . 1
H H19A 0.9652 0.3455 0.8894 0.069 Uiso calc R 1
C C20 0.85886(18) 0.37447(14) 0.7016(6) 0.0510(7) Uani d . 1
H H20A 0.8178 0.3554 0.8058 0.061 Uiso calc R 1
N N1 0.63098(13) 0.47350(10) 0.1870(4) 0.0419(5) Uani d . 1
N N2 0.68676(14) 0.36140(11) 0.5019(5) 0.0475(6) Uani d . 1
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0061 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
N2 C1 C6 110.8(2)
N2 C1 C2 109.8(2)
C6 C1 C2 110.8(2)
N2 C1 H1A 108.4
C6 C1 H1A 108.4
C2 C1 H1A 108.4
C3 C2 C1 111.0(2)
C3 C2 H2A 109.4
C1 C2 H2A 109.4
C3 C2 H2B 109.4
C1 C2 H2B 109.4
H2A C2 H2B 108.0
C2 C3 C4 111.6(3)
C2 C3 H3A 109.3
C4 C3 H3A 109.3
C2 C3 H3B 109.3
C4 C3 H3B 109.3
H3A C3 H3B 108.0
C3 C4 C5 111.6(3)
C3 C4 H4A 109.3
C5 C4 H4A 109.3
C3 C4 H4B 109.3
C5 C4 H4B 109.3
H4A C4 H4B 108.0
C6 C5 C4 110.5(2)
C6 C5 H5A 109.5
C4 C5 H5A 109.5
C6 C5 H5B 109.5
C4 C5 H5B 109.5
H5A C5 H5B 108.1
N1 C6 C5 110.92(19)
N1 C6 C1 109.2(2)
C5 C6 C1 111.3(2)
N1 C6 H6A 108.4
C5 C6 H6A 108.4
C1 C6 H6A 108.4
N1 C7 C8 117.8(2)
N1 C7 C14 120.8(2)
C8 C7 C14 121.3(2)
C13 C8 C9 118.5(2)
C13 C8 C7 121.8(2)
C9 C8 C7 119.6(2)
C10 C9 C8 120.2(3)
C10 C9 H9A 119.9
C8 C9 H9A 119.9
C11 C10 C9 120.8(3)
C11 C10 H10A 119.6
C9 C10 H10A 119.6
C10 C11 C12 119.8(2)
C10 C11 H11A 120.1
C12 C11 H11A 120.1
C11 C12 C13 120.1(3)
C11 C12 H12A 119.9
C13 C12 H12A 119.9
C12 C13 C8 120.6(3)
C12 C13 H13A 119.7
C8 C13 H13A 119.7
N2 C14 C15 118.3(2)
N2 C14 C7 120.6(2)
C15 C14 C7 121.1(2)
C16 C15 C20 118.8(2)
C16 C15 C14 121.3(2)
C20 C15 C14 119.9(2)
C15 C16 C17 120.6(3)
C15 C16 H16A 119.7
C17 C16 H16A 119.7
C18 C17 C16 120.2(3)
C18 C17 H17A 119.9
C16 C17 H17A 119.9
C17 C18 C19 119.7(3)
C17 C18 H18A 120.1
C19 C18 H18A 120.1
C18 C19 C20 120.5(3)
C18 C19 H19A 119.8
C20 C19 H19A 119.8
C19 C20 C15 120.2(3)
C19 C20 H20A 119.9
C15 C20 H20A 119.9
C7 N1 C6 116.1(2)
C14 N2 C1 115.4(2)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
C1 N2 1.466(3)
C1 C6 1.513(4)
C1 C2 1.530(3)
C1 H1A 0.9800
C2 C3 1.512(4)
C2 H2A 0.9700
C2 H2B 0.9700
C3 C4 1.513(5)
C3 H3A 0.9700
C3 H3B 0.9700
C4 C5 1.522(4)
C4 H4A 0.9700
C4 H4B 0.9700
C5 C6 1.508(4)
C5 H5A 0.9700
C5 H5B 0.9700
C6 N1 1.476(3)
C6 H6A 0.9800
C7 N1 1.270(3)
C7 C8 1.489(3)
C7 C14 1.511(3)
C8 C13 1.385(4)
C8 C9 1.387(3)
C9 C10 1.381(3)
C9 H9A 0.9300
C10 C11 1.364(4)
C10 H10A 0.9300
C11 C12 1.373(4)
C11 H11A 0.9300
C12 C13 1.384(3)
C12 H12A 0.9300
C13 H13A 0.9300
C14 N2 1.277(3)
C14 C15 1.489(3)
C15 C16 1.382(4)
C15 C20 1.388(4)
C16 C17 1.386(4)
C16 H16A 0.9300
C17 C18 1.370(5)
C17 H17A 0.9300
C18 C19 1.376(5)
C18 H18A 0.9300
C19 C20 1.383(4)
C19 H19A 0.9300
C20 H20A 0.9300
loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
_geom_torsion_publ_flag
N2 C1 C6 N1 -58.1(3) n
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 ChemSpider 254638
