7-(1,3-Dioxolan-2-ylmethyl)-1,3-dimethyl-3,7-dihydro-1<i>H</i>-purine-2,6-dione acetic acid solvate
Bing Tu; Xing-Jü Ma; Zhan Shu; Zhi-Min Jin; Acta Crystallographica Section E 63 (2007) o2676–o2677; doi:10.1107/S1600536807014341

data_2213530
_publ_section_title
;7-(1,3-Dioxolan-2-ylmethyl)-1,3-dimethyl-3,7-dihydro-1<i>H</i>-purine-2,6-dione
 acetic acid solvate
;
_journal_coeditor_code           SA2043
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2676
_journal_page_last               o2677
_journal_paper_doi               10.1107/S1600536807014341
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C11 H14 N4 O4, C2 H4 O2'
_chemical_formula_moiety         'C11 H14 N4 O4, C2 H4 O2'
_chemical_formula_sum            'C13 H18 N4 O6'
_chemical_formula_weight         326.31
_chemical_name_systematic
;
7-(1,3-Dioxolan-2-ylmethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione
acetic acid solvate
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 100.474(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   5.3724(11)
_cell_length_b                   18.223(4)
_cell_length_c                   7.6663(16)
_cell_measurement_reflns_used    843
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      24.98
_cell_measurement_theta_min      2.74
_cell_volume                     738.0(3)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Bruker, 2000)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX 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  0.0332
_diffrn_reflns_av_sigmaI/netI    0.0253
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            6377
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.24
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.118
_exptl_absorpt_correction_T_max  0.9763
_exptl_absorpt_correction_T_min  0.9622
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2000)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.468
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             344
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.323
_refine_diff_density_min         -0.247
_refine_ls_abs_structure_details 'Flack (1983)'
_refine_ls_abs_structure_Flack   0.00(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.292
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     212
_refine_ls_number_reflns         1340
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.292
_refine_ls_R_factor_all          0.0674
_refine_ls_R_factor_gt           0.0668
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0816P)^2^+0.4926P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1686
_refine_ls_wR_factor_ref         0.1691
_reflns_number_gt                1321
_reflns_number_total             1340
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sa2043.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'
_cod_database_code               2213530
_cod_database_fobs_code          2213530