Host–guest interaction in a thiourea–dimethyl oxalate (2/1) complex at 300 and 100K
R. Chitra; Pascal Roussel; R. R. Choudhury; Acta Crystallographica Section C 62 (2006) o547–o549; doi:10.1107/S0108270106026084

data_2015537
_publ_section_title
;
 Host--guest interaction in a thiourea--dimethyl oxalate (2/1) complex
 at 300 and 100K
;
_journal_coeditor_code           BM3008
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o547
_journal_page_last               o549
_journal_paper_doi               10.1107/S0108270106026084
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          '2C H4 N2 S, C4 H6 O4'
_chemical_formula_moiety         '2C H4 N2 S, C4 H6 O4'
_chemical_formula_sum            'C6 H14 N4 O4 S2'
_chemical_formula_weight         270.33
_chemical_name_common            'thiourea:dimethyloxalate (2:1)'
_chemical_name_systematic
;
 thiourea:dimethyloxalate (2:1)
;
_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           SHELXL-97
_cell_angle_alpha                66.239(3)
_cell_angle_beta                 70.516(3)
_cell_angle_gamma                67.479(3)
_cell_formula_units_Z            1
_cell_length_a                   6.1010(3)
_cell_length_b                   7.6447(4)
_cell_length_c                   8.4463(5)
_cell_measurement_reflns_used    1585
_cell_measurement_temperature    300(2)
_cell_measurement_theta_max      33.98
_cell_measurement_theta_min      2.70
_cell_volume                     325.48(3)
_computing_cell_refinement       'SAINT (Bruker, 2003)'
_computing_data_collection       'APEX2 (Bruker--Nonius, 2003)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      300(2)
_diffrn_detector_area_resol_mean 0
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.811
_diffrn_measurement_device_type  'Bruker Nonius X8 APEXII 4K CCD'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0191
_diffrn_reflns_av_sigmaI/netI    0.0296
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            4488
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         33.98
_diffrn_reflns_theta_min         2.70
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.415
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.797
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.379
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular shape'
_exptl_crystal_F_000             142
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.253
_refine_diff_density_min         -0.205
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.019
_refine_ls_hydrogen_treatment    refU
_refine_ls_matrix_type           full
_refine_ls_number_parameters     81
_refine_ls_number_reflns         2151
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.0667
_refine_ls_R_factor_gt           0.0407
_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^)+(0.0566P)^2^+0.0265P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0984
_refine_ls_wR_factor_ref         0.1129
_reflns_number_gt                1463
_reflns_number_total             2151
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bm3008.cif
_cod_data_source_block           I-300
_cod_depositor_comments
;
The following automatic conversions were performed:
'_refine_ls_hydrogen_treatment' value 'refu' changed to 'refU' 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:

'_refine_ls_hydrogen_treatment' value 'refu' changed to 'refU'
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               2015537