Sildenafil citrate monohydrate
Yathirajan, Hemmige S.; Basavegowda, Nagaraj; Nagaraja, Padmarajaiah; Bolte, Michael; Acta Crystallographica Section E 61 (2005) o489–o491; doi:10.1107/S1600536805002564

data_2205085
_publ_section_title
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 Sildenafil citrate monohydrate
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o489
_journal_page_last               o491
_journal_paper_doi               10.1107/S1600536805002564
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C22 H31 N6 O4 S +, C6 H7 O7 -, H2 O'
_chemical_formula_moiety         'C22 H31 N6 O4 S +, C6 H7 O7 -, H2 O'
_chemical_formula_sum            'C28 H40 N6 O12 S'
_chemical_formula_weight         684.72
_chemical_name_common
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Sildenafil citrate monohydrate
;
_chemical_name_systematic
;
1-{[3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-
4-ethoxyphenyl]sulfonyl}-4-methylpiperazinium citrate monohydrate
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c 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                   24.002(4)
_cell_length_b                   10.9833(17)
_cell_length_c                   24.364(3)
_cell_measurement_reflns_used    8732
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      23.1
_cell_measurement_theta_min      2.0
_cell_volume                     6422.9(17)
_computing_cell_refinement       X-AREA
_computing_data_collection       'X-AREA (Stoe & Cie, 2001)'
_computing_data_reduction        X-AREA
_computing_molecular_graphics    'XP in SHELXTL-Plus (Sheldrick, 1991)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997) '
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990) '
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Stoe IPDS-II two-circle'
_diffrn_measurement_method       \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  0.0981
_diffrn_reflns_av_sigmaI/netI    0.2268
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            44385
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.41
_diffrn_reflns_theta_min         1.87
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.173
_exptl_absorpt_correction_T_max  0.9513
_exptl_absorpt_correction_T_min  0.9365
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(MULABS; Spek, 2003; Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.416
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2896
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.379
_refine_diff_density_min         -0.420
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.782
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     428
_refine_ls_number_reflns         5856
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.782
_refine_ls_R_factor_all          0.1743
_refine_ls_R_factor_gt           0.0785
_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^)+(0.0407P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1364
_refine_ls_wR_factor_ref         0.1543
_reflns_number_gt                1970
_reflns_number_total             5856
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hg6131.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 
;
_cod_database_code               2205085
_cod_database_fobs_code          2205085