Effect of substitution on molecular conformation and packing features in a series of aryl substituted ethyl-6-methyl-4-phenyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylates
Nayak, Susanta K.; Venugopala, K. N.; Chopra, Deepak; Vasu,; Row, T. N. Guru; CrystEngComm 12 (2010) 1205–; doi:10.1039/b919648j

data_7212103
_publ_section_title
;
 Effect of substitution on molecular conformation and packing features in
 a series of aryl substituted
 ethyl-6-methyl-4-phenyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylates
;
_journal_issue                   4
_journal_name_full               CrystEngComm
_journal_page_first              1205
_journal_paper_doi               10.1039/b919648j
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         'C16 H21 N3 O2 S'
_chemical_formula_sum            'C16 H21 N3 O2 S'
_chemical_formula_weight         319.42
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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                102.79(3)
_cell_angle_beta                 90.557(19)
_cell_angle_gamma                110.68(2)
_cell_formula_units_Z            2
_cell_length_a                   7.369(3)
_cell_length_b                   9.4420(19)
_cell_length_c                   13.086(3)
_cell_measurement_reflns_used    550
_cell_measurement_temperature    292(2)
_cell_measurement_theta_max      26.4
_cell_measurement_theta_min      2.3
_cell_volume                     826.8(5)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        'SAINT (Bruker, 1998)'
_computing_molecular_graphics
'Ortep-3 for Windows (Farrugia, 1997) and CAMERON (Watkin et al., 1993)'
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXTL V6.14 (Bruker, 2000)'
_diffrn_ambient_temperature      292(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.950
_diffrn_measurement_device_type  'Bruker SMART CCD area detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0121
_diffrn_reflns_av_sigmaI/netI    0.0246
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            4460
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         33.84
_diffrn_reflns_theta_min         3.17
_exptl_absorpt_coefficient_mu    0.206
_exptl_absorpt_correction_T_max  0.9797
_exptl_absorpt_correction_T_min  0.9307
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, 1996'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             340
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.287
_refine_diff_density_min         -0.177
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         3070
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0543
_refine_ls_R_factor_gt           0.0423
_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^)+(0.0482P)^2^+0.2934P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1031
_refine_ls_wR_factor_ref         0.1130
_reflns_number_gt                2435
_reflns_number_total             3070
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b919648j.txt
_cod_data_source_block           PYR5
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_database_code               7212103