#------------------------------------------------------------------------------
#$Date: 2011-09-10 04:16:28 +0100 (Sat, 10 Sep 2011) $
#$Revision: 25271 $
#$URL: svn://www.crystallography.net/cod/cif/2/2100894.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_2100894
loop_
_publ_author_name
'Koh, L.-L.'
'Lam, Y.'
'Sim, K. Y.'
'Huang, H. H.'
_publ_section_title
;
 Structures of <i>meso</i>- and (+-)-1,2-dinitro-1,2-diphenylethane and
 2,3-dinitro-2,3-diphenylbutane
;
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              116
_journal_page_last               123
_journal_volume                  49
_journal_year                    1993
_chemical_formula_sum            'C14 H12 N2 O4'
_chemical_formula_weight         272.3
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 119.40(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   18.260(5)
_cell_length_b                   9.888(3)
_cell_length_c                   17.660(4)
_cell_volume                     2778.0(14)
_diffrn_radiation_type           Mo
_diffrn_radiation_wavelength     0.71069
_exptl_absorpt_coefficient_mu    0.091
_exptl_crystal_density_diffrn    1.302
_exptl_crystal_F_000             1136
_[local]_cod_data_source_file    hl1009.cif
_[local]_cod_data_source_block   hl1009b
_cod_original_cell_volume        2778.2(13)
_cod_database_code               2100894
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
C1 .3210(2) .1424(4) .3456(2) .058(2)
C2 .4116(2) .1595(4) .4153(2) .055(2)
C11 .3111(2) .0953(5) .2593(2) .055(2)
C12 .2597(3) .1668(5) .1858(3) .077(3)
C13 .2479(3) .1239(7) .1062(3) .103(4)
C14 .2867(4) .0108(7) .1005(3) .097(4)
C15 .3382(3) -.0611(5) .1732(3) .091(3)
C16 .3505(3) -.0189(5) .2528(3) .074(3)
C21 .4541(3) .2748(6) .3965(2) .054(3)
C22 .4243(3) .4038(7) .3876(3) .071(3)
C23 .4647(3) .5089(6) .3715(3) .084(3)
C24 .5327(4) .4839(8) .3623(3) .096(4)
C25 .5627(3) .3548(9) .3707(3) .100(4)
C26 .5235(3) .2502(6) .3875(3) .078(3)
N1 .2771(3) .0390(5) .3740(3) .080(3)
N2 .4161(3) .1855(4) .5030(2) .069(2)
O1 .2028(3) .0519(5) .3427(3) .135(3)
O2 .3207(3) -.0494(4) .4240(2) .107(3)
O3 .4802(2) .1499(3) .5671(2) .104(2)
O4 .3577(2) .2433(3) .5032(2) .084(2)
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
O1 N1 O2 126.9(6)
N1 C1 C2 110.4(3)
C11 C1 N1 107.5(3)
C11 C1 C2 113.3(4)
O3 N2 O4 125.6(5)
N2 C2 C1 109.6(4)
C21 C2 N2 108.6(3)
C21 C2 C1 112.5(3)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
C1 C2 1.510(5)
C2 C21 1.504(6)
C2 N2 1.533(6)
N1 O2 1.219(6)
N2 O4 1.210(6)
C1 C11 1.516(6)
C1 N1 1.528(8)
N1 O1 1.194(7)
N2 O3 1.214(4)