data_2000685
_journal_name_full  'Acta Cryst.'
_journal_year  1992
_journal_volume  C48
_journal_page_first  1464
_journal_page_last  1466
loop_
_publ_author_name
 'Busetti, V.'
 'Crisma, M.'
 'Toniolo, C.'
_chemical_formula_sum  'C12 H14 N2 O4'
_chemical_formula_weight  250.25
_symmetry_cell_setting  monoclinic
_symmetry_space_group_name_H-M  'P 21/n'
_symmetry_space_group_name_Hall  ?
_cell_length_a  25.010(2)
_cell_length_b  6.1440(10)
_cell_length_c  8.1690(10)
_cell_angle_alpha  90.
_cell_angle_beta  93.30(2)
_cell_angle_gamma  90.
_cell_volume  1253.2(3)
_cell_formula_units_Z  4
_exptl_crystal_density_diffrn  1.326
_exptl_crystal_density_meas  1.32
_exptl_crystal_F_000  528
_exptl_absorpt_coefficient_mu  0.0943
_diffrn_radiation_type  Mo
_diffrn_radiation_wavelength  0.71069
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
 C(1) .16056(9) .9397(4) .4343(3)
 C(2) .17290(10)
      .0674(5) .3020(3)
 C(3) .20730(10)
      .2411(6) .3213(4)
 C(4) .22980(10)
      .2923(5) .4730(5)
 C(5) .21750(10)
      .1687(6) .6074(4)
 C(6) .18350(10)
      .9927(5) .5874(3)
 C(7) .12420(10)
      .7486(5) .4042(3)
 O(1) .10980(6) .6625(3) .5583(2)
 C(8) .07587(9) .4933(4) .5508(3)
 O(2) .05965(7) .4073(3) .4243(2)
 N(1) .06170(8) .4357(3) .7008(2)
 C(9) .07880(9) .5462(4) .8489(3)
 C(10) .09060(10)
       .4093(4) .9995(3)
 C(11) .13530(10)
       .5144(4) .9174(3)
 C(12) .05523(9) .7651(4) .8769(3)
 O(3) .07282(7) .8792(3) .9933(2)
 N(2) .01539(8) .8260(3) .7749(2)
 O(4) -.00496(7) 1.0365(3) .7823(2)