Dimethyl 2-nitroterephthalate
Zou, Pei; Xie, Min-Hao; Luo, Shi-Neng; Liu, Ya-Ling; He, Yong-Jun; Acta Crystallographica Section E 64 (2008) o2215–; doi:10.1107/S160053680803465X

data_2219971
_publ_section_title
;
 Dimethyl 2-nitroterephthalate
;
_journal_coeditor_code           PV2115
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2215
_journal_paper_doi               10.1107/S160053680803465X
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C10 H9 N O6'
_chemical_formula_moiety         'C10 H9 N O6'
_chemical_formula_sum            'C10 H9 N O6'
_chemical_formula_weight         239.18
_chemical_name_systematic
;
Dimethyl 2-nitroterephthalate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 98.18(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.9080(14)
_cell_length_b                   12.662(3)
_cell_length_c                   12.231(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      13
_cell_measurement_theta_min      10
_cell_volume                     1058.9(4)
_computing_cell_refinement       'CAD-4 Software (Enraf--Nonius,1989)'
_computing_data_collection       'CAD-4 Software (Enraf--Nonius,1989)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1995)'
_computing_molecular_graphics    'SHELXL97 (Sheldrick, 2008)'
_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 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Enraf--Nonius CAD-4'
_diffrn_measurement_method       \w/2\q
_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  0.0572
_diffrn_reflns_av_sigmaI/netI    0.0402
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2052
_diffrn_reflns_theta_full        25.27
_diffrn_reflns_theta_max         25.27
_diffrn_reflns_theta_min         2.33
_diffrn_standards_decay_%        2
_diffrn_standards_interval_count 200
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.127
_exptl_absorpt_correction_T_max  0.9874
_exptl_absorpt_correction_T_min  0.9630
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(CAD-4 Software; Enraf--Nonius,1989)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.500
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             496
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.291
_refine_diff_density_min         -0.306
_refine_ls_extinction_coef       0.053(8)
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     156
_refine_ls_number_reflns         1889
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.1163
_refine_ls_R_factor_gt           0.0781
_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^)+(0.05P)^2^+3.5P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1683
_refine_ls_wR_factor_ref         0.2013
_reflns_number_gt                1245
_reflns_number_total             1889
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            pv2115.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_sg_symbol_H-M      'P 21/n'
_cod_database_code               2219971
_cod_database_fobs_code          2219971