Piperazinediium 3-nitrophthalate dihydrate
Guo, Ming-Lin; Acta Crystallographica Section E 60 (2004) o1236–o1238; doi:10.1107/S1600536804014692

data_2203916
_publ_section_title
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 Piperazinediium 3-nitrophthalate dihydrate
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_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1236
_journal_page_last               o1238
_journal_paper_doi               10.1107/S1600536804014692
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C4 H12 N2 2+, C8 H3 N O6 2-, 2H2 O'
_chemical_formula_moiety         'C4 H12 N2 2+, C8 H3 N O6 2-, 2H2 O'
_chemical_formula_sum            'C12 H19 N3 O8'
_chemical_formula_weight         333.30
_chemical_name_systematic
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Piperazinediium 3-nitrophthalate dihydrate
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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                   18.436(8)
_cell_length_b                   6.551(3)
_cell_length_c                   24.274(10)
_cell_measurement_reflns_used    993
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.02
_cell_measurement_theta_min      2.36
_cell_volume                     2932(2)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 1997)'
_computing_data_reduction        'SAINT (Bruker, 1997)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 2001)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0624
_diffrn_reflns_av_sigmaI/netI    0.0469
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            15732
_diffrn_reflns_theta_full        26.35
_diffrn_reflns_theta_max         26.35
_diffrn_reflns_theta_min         1.68
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.128
_exptl_absorpt_correction_T_max  0.982
_exptl_absorpt_correction_T_min  0.954
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.510
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             1408
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.484
_refine_diff_density_min         -0.247
_refine_ls_abs_structure_details 'Flack & Bernardinelli (1999)'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     415
_refine_ls_number_reflns         3053
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0808
_refine_ls_R_factor_gt           0.0559
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0991P)^2^+0.5343P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1431
_refine_ls_wR_factor_ref         0.1607
_reflns_number_gt                2278
_reflns_number_total             3053
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh6232.cif
_cod_data_source_block           I
_cod_depositor_comments
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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 
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_cod_database_code               2203916
_cod_database_fobs_code          2203916