5-(1-Hydroxyethylidene)-1,3-dimethylpyrimidine-2,4,6(1<i>H</i>,3<i>H</i>,5<i>H</i>)-trione and four amino derivatives
da Silva, Emerson T.; Ribiero, Rodrigo S.; Lima, Edson L. S.; Wardell, James L.; Skakle, Janet M. S.; Low, John N.; Glidewell, Christopher; Acta Crystallographica Section C 61 (2005) o15–o20; doi:10.1107/S0108270104028859

data_2014733
_publ_section_title
;5-(1-Hydroxyethylidene)-1,3-dimethylpyrimidine-2,4,6(1<i>H</i>,3<i>H</i>,5<i>H</i>)-trione
 and four amino derivatives
;
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o15
_journal_page_last               o20
_journal_paper_doi               10.1107/S0108270104028859
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C12 H19 N3 O5'
_chemical_formula_moiety         'C12 H19 N3 O5'
_chemical_formula_sum            'C12 H19 N3 O5'
_chemical_formula_weight         285.30
_chemical_name_systematic
;
5-[1-(2,2-dimethoxyethylamino)ethylidene]-1,3-dimethylpyrimidine-
2,4,6(1H,3H,5H)-trione
;
_space_group_IT_number           148
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            18
_cell_length_a                   18.4577(4)
_cell_length_b                   18.4577(4)
_cell_length_c                   19.7736(4)
_cell_measurement_reflns_used    2965
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.50
_cell_measurement_theta_min      3.09
_cell_volume                     5834.1(2)
_computing_cell_refinement       'DENZO (Otwinowski & Minor, 1997) and COLLECT'
_computing_data_collection       'COLLECT (Hooft, 1999)'
_computing_data_reduction        'DENZO and COLLECT'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL97 and PRPKAPPA (Ferguson, 1999)'
_computing_structure_refinement  'OSCAIL and SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution
'OSCAIL (McArdle, 2003) and SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Nonius KappaCCD area detector'
_diffrn_measurement_method       \f-\w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed X-ray tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0333
_diffrn_reflns_av_sigmaI/netI    0.0352
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            14896
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.09
_diffrn_standards_decay_%        negligible
_exptl_absorpt_coefficient_mu    0.115
_exptl_absorpt_correction_T_max  0.966
_exptl_absorpt_correction_T_min  0.950
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2000)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.462
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2736
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.346
_refine_diff_density_min         -0.296
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.109
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     186
_refine_ls_number_reflns         2965
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.109
_refine_ls_R_factor_all          0.0583
_refine_ls_R_factor_gt           0.0420
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0597P)^2^+2.9334P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1076
_refine_ls_wR_factor_ref         0.1150
_reflns_number_gt                2329
_reflns_number_total             2965
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sk1792.cif
_cod_data_source_block           III
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' 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      'R -3'
_cod_database_code               2014733
_cod_database_fobs_code          2014733