Two polymorphs and the diethylammonium salt of the barbiturate eldoral
Gelbrich, Thomas; Rossi, Denise; Griesser, Ulrich J.; Acta Crystallographica Section C 68 (2012) o65–o70; doi:10.1107/S0108270111055120

data_2018391
_publ_section_title
;
 Two polymorphs and the diethylammonium salt of the barbiturate eldoral
;
_journal_coeditor_code           SK3420
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o65
_journal_page_last               o70
_journal_paper_doi               10.1107/S0108270111055120
_journal_volume                  68
_journal_year                    2012
_chemical_formula_iupac          'C11 H17 N3 O3'
_chemical_formula_moiety         'C11 H17 N3 O3'
_chemical_formula_sum            'C11 H17 N3 O3'
_chemical_formula_weight         239.28
_chemical_name_common            eldoral
_chemical_name_systematic
;
5-ethyl-5-(piperidin-1-yl)-1,3-diazinane-2,4,6-trione
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 98.189(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.8761(2)
_cell_length_b                   12.7102(4)
_cell_length_c                   11.9438(3)
_cell_measurement_reflns_used    4404
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      67.1820
_cell_measurement_theta_min      3.4714
_cell_volume                     1183.46(6)
_computing_cell_refinement       'CrysAlis PRO (Oxford Diffraction, 2003)'
_computing_data_collection       'CrysAlis PRO (Oxford Diffraction, 2003)'
_computing_data_reduction        'CrysAlis PRO (Oxford Diffraction, 2003)'
_computing_molecular_graphics
;
XP in SHELXTL (Bruker, 1998) and Mercury (Macrae <i>et al.</i>,
2008)
;
_computing_publication_material  'publCIF (Westrip, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 10.3575
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Oxford Xcalibur Ruby Gemini Ultra'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'Enhance Ultra (Cu) X-ray Source'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.5418
_diffrn_reflns_av_R_equivalents  0.0304
_diffrn_reflns_av_sigmaI/netI    0.0234
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            6405
_diffrn_reflns_theta_full        67.29
_diffrn_reflns_theta_max         67.29
_diffrn_reflns_theta_min         5.11
_exptl_absorpt_coefficient_mu    0.822
_exptl_absorpt_correction_T_max  0.7346
_exptl_absorpt_correction_T_min  0.7189
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrysAlis PRO; Oxford Diffraction, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             512
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.209
_refine_diff_density_min         -0.208
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     178
_refine_ls_number_reflns         2117
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.086
_refine_ls_R_factor_all          0.0481
_refine_ls_R_factor_gt           0.0442
_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^)+(0.0823P)^2^+0.3019P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1228
_refine_ls_wR_factor_ref         0.1258
_reflns_number_gt                1900
_reflns_number_total             2111
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sk3420.cif
_cod_data_source_block           Ia
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2018391
_cod_database_fobs_code          2018391