1,4-Bis(2-nitrophenoxy)butane
Elizondo, Perla; Rodríguez de Barbarín, Cecilia; Nájera, Blanca; Pérez, Nancy; Acta Crystallographica Section E 65 (2009) o3217–; doi:10.1107/S1600536809048909

data_2224310
_publ_section_title
;
 1,4-Bis(2-nitrophenoxy)butane
;
_journal_coeditor_code           IM2156
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3217
_journal_paper_doi               10.1107/S1600536809048909
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C16 H16 N2 O6'
_chemical_formula_moiety         'C16 H16 N2 O6'
_chemical_formula_sum            'C16 H16 N2 O6'
_chemical_formula_weight         332.31
_chemical_melting_point_gt       442
_chemical_melting_point_lt       443
_chemical_name_systematic
;
1,4-Bis(2-nitrophenoxy)butane
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 110.866(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.7977(8)
_cell_length_b                   13.888(2)
_cell_length_c                   7.6729(8)
_cell_measurement_reflns_used    85
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      12.396
_cell_measurement_theta_min      5.225
_cell_volume                     776.44(16)
_computing_cell_refinement       'XSCANS (Siemens, 1996)'
_computing_data_collection       'XSCANS (Siemens, 1996)'
_computing_data_reduction        'SHELXTL-Plus (Sheldrick, 2008)'
_computing_molecular_graphics
;
SHELXTL-Plus (Sheldrick, 2008) and Mercury (Macrae <i>et al.</i>,
2006)
;
_computing_publication_material  'SHELXTL-Plus (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXTL-Plus (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL-Plus (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\w scan'
_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  0.0300
_diffrn_reflns_av_sigmaI/netI    0.0324
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            3850
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.93
_diffrn_standards_decay_%        2.29
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.110
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.421
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             348
_exptl_crystal_size_max          0.7
_exptl_crystal_size_mid          0.6
_exptl_crystal_size_min          0.4
_refine_diff_density_max         0.219
_refine_diff_density_min         -0.186
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     110
_refine_ls_number_reflns         2256
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0624
_refine_ls_R_factor_gt           0.0478
_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^)+(0.0452P)^2^+0.1839P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1188
_refine_ls_wR_factor_ref         0.1302
_reflns_number_gt                1752
_reflns_number_total             2256
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            im2156.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        776.4(2)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2224310
_cod_database_fobs_code          2224310