Dimethyl 1<i>H</i>-pyrazole-3,5-dicarboxylate
Jun-Ping Xiao; Qing-Xiang Zhou; Jia-Hongwen Tu; Acta Crystallographica Section E 63 (2007) o2785–o2785; doi:10.1107/S1600536807019642

data_2213745
_publ_section_title
;
 Dimethyl 1<i>H</i>-pyrazole-3,5-dicarboxylate
;
_journal_coeditor_code           DN2164
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2785
_journal_page_last               o2785
_journal_paper_doi               10.1107/S1600536807019642
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C7 H8 N2 O4'
_chemical_formula_moiety         'C7 H8 N2 O4'
_chemical_formula_sum            'C7 H8 N2 O4'
_chemical_formula_weight         184.15
_chemical_name_systematic
;
Dimethyl 1<i>H</i>-pyrazole-3,5-dicarboxylate
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   10.9563(14)
_cell_length_b                   6.4983(8)
_cell_length_c                   23.589(3)
_cell_measurement_reflns_used    2089
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      51.887
_cell_measurement_theta_min      5.075
_cell_volume                     1679.5(4)
_computing_cell_refinement       'SAINT (Bruker, 1998)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        SAINT
_computing_molecular_graphics
;
ORTEPIII (Burnett & Johnson, 1996), ORTEP-3 for Windows (Farrugia,
1997) and
PLATON (Spek, 2003)
;
_computing_publication_material  'SHELXTL (Sheldrick, 1997b)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997a)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.1156
_diffrn_reflns_av_sigmaI/netI    0.0722
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            8106
_diffrn_reflns_theta_full        25.09
_diffrn_reflns_theta_max         25.09
_diffrn_reflns_theta_min         2.05
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.121
_exptl_absorpt_correction_T_max  0.9848
_exptl_absorpt_correction_T_min  0.9431
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.457
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.489
_exptl_crystal_size_mid          0.335
_exptl_crystal_size_min          0.127
_refine_diff_density_max         0.166
_refine_diff_density_min         -0.242
_refine_ls_extinction_coef       0.020(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   0.966
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     162
_refine_ls_number_reflns         1614
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      0.965
_refine_ls_R_factor_all          0.0593
_refine_ls_R_factor_gt           0.0443
_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^)+(0.0538P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0994
_refine_ls_wR_factor_ref         0.1063
_reflns_number_gt                1196
_reflns_number_total             1614
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            dn2164.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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 'Orthorhombic' changed to
'orthorhombic' 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_database_code               2213745
_cod_database_fobs_code          2213745