Structural characterization of selenium and selenium-diiodine analogues of the antithyroid drug 6-<i>n</i>-propyl-2-thiouracil and its alkyl derivatives
C. D. Antoniadis; A. J. Blake; S. K. Hadjikakou; N. Hadjiliadis; P. Hubberstey; M. Schröder; C. Wilson; Acta Crystallographica Section B 62 (2006) 580–591; doi:10.1107/S0108768106011426

data_2100559
_publ_section_title
;
 Structural characterization of selenium and selenium-diiodine
 analogues of the antithyroid drug 6-<i>n</i>-propyl-2-thiouracil and
 its alkyl derivatives
;
_journal_coeditor_code           SO5003
_journal_date_accepted           2006-03-29
_journal_date_recd_electronic    2006-03-08
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              580
_journal_page_last               591
_journal_paper_category          FA
_journal_paper_doi               10.1107/S0108768106011426
_journal_volume                  62
_journal_year                    2006
_chemical_formula_moiety         'C28 H34 N8 O4 Se2'
_chemical_formula_sum            'C28 H34 N8 O4 Se2'
_chemical_formula_weight         704.55
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'enCIFer editing of SHELXL97 CIF output'
_cell_angle_alpha                83.161(2)
_cell_angle_beta                 82.785(2)
_cell_angle_gamma                84.358(2)
_cell_formula_units_Z            1
_cell_length_a                   5.0717(6)
_cell_length_b                   11.8615(14)
_cell_length_c                   11.9385(14)
_cell_measurement_reflns_used    1672
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.03
_cell_measurement_theta_min      2.20
_cell_volume                     704.90(14)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT; Bruker SHELXTL'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'enCIFer (Allen et al., 2004); PLATON'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'Bruker SMART APEXII CCD diffractometer'
_diffrn_measurement_method       'fine-slice \w scans'
_diffrn_radiation_monochromator  'silicon 111'
_diffrn_radiation_source         'Daresbury Laboratory Station 9.8'
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.6775
_diffrn_reflns_av_R_equivalents  0.038
_diffrn_reflns_av_sigmaI/netI    0.067
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            8292
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         28.94
_diffrn_reflns_theta_min         2.21
_diffrn_standards_decay_%        5
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.674
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.804
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS version 2.10; Bruker, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.660
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             358
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.59
_refine_diff_density_min         -0.92
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.98
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         4198
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.98
_refine_ls_R_factor_all          0.0702
_refine_ls_R_factor_gt           0.0415
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0505P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0859
_refine_ls_wR_factor_ref         0.0968
_reflns_number_gt                3144
_reflns_number_total             4198
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            so5003.cif
_cod_data_source_block           10
_cod_database_code               2100559