Structural, Thermodynamic, and Kinetic Aspects of the Polymorphism of Trimethylthiourea: The Influence of Kinetics on the Transformations between Polymorphs
Näther, Christian; Jess, Inke; Jones, Peter G.; Taouss, Christina; Teschmit, Nicole; Crystal Growth & Design 13 (2013) 1676–; doi:10.1021/cg400005d

data_4507643
_publ_section_title
;
 Structural, Thermodynamic, and Kinetic Aspects of the Polymorphism of
 Trimethylthiourea: The Influence of Kinetics on the Transformations
 between Polymorphs
;
_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1676
_journal_paper_doi               10.1021/cg400005d
_journal_volume                  13
_journal_year                    2013
_chemical_formula_sum            'C4 H10 N2 S'
_chemical_formula_weight         118.20
_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           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.034(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   8.5206(3)
_cell_length_b                   7.8048(3)
_cell_length_c                   18.6978(5)
_cell_measurement_reflns_used    10204
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.8849
_cell_measurement_theta_min      2.1740
_cell_volume                     1243.43(7)
_computing_cell_refinement
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET) 
(compiled Oct 27 2011,15:02:11) 
;
_computing_data_collection
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET) 
(compiled Oct 27 2011,15:02:11) 
;
_computing_data_reduction
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET) 
(compiled Oct 27 2011,15:02:11) 
;
_computing_molecular_graphics    'Bruker XP'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 16.1419
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur, Eos'
_diffrn_measurement_method       \w-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0368
_diffrn_reflns_av_sigmaI/netI    0.0181
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            34910
_diffrn_reflns_theta_full        28.70
_diffrn_reflns_theta_max         28.70
_diffrn_reflns_theta_min         2.18
_exptl_absorpt_coefficient_mu    0.401
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.97504
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET) 
(compiled Oct 27 2011,15:02:11) 
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.263
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             512
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.309
_refine_diff_density_min         -0.246
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     141
_refine_ls_number_reflns         3225
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0306
_refine_ls_R_factor_gt           0.0253
_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^)+(0.0267P)^2^+0.4493P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0608
_refine_ls_wR_factor_ref         0.0632
_reflns_number_gt                2886
_reflns_number_total             3225
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg400005d_si_002.cif
_cod_data_source_block           ulme
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4507643