“Conformational Simulation” of Sulfamethizole by Molecular Complexation and Insights from Charge Density Analysis: Role of Intramolecular S···O Chalcogen Bonding
Thomas, Sajesh P.; Veccham, Srimukh Prasad K. P.; Farrugia, Louis J.; Guru Row, T. N.; Crystal Growth & Design 15 (2015) 2110–; doi:10.1021/cg5016687

data_4513013
_publ_section_title
;
 &#x201C;Conformational Simulation&#x201D; of Sulfamethizole by Molecular
 Complexation and Insights from Charge Density Analysis: Role of
 Intramolecular S&#x00B7;&#x00B7;&#x00B7;O Chalcogen Bonding
;
_journal_issue                   5
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              2110
_journal_paper_doi               10.1021/cg5016687
_journal_volume                  15
_journal_year                    2015
_chemical_compound_source        'see text'
_chemical_formula_moiety         '2(C9 H9 N4 O2 S2), 2(C5 H7 N2), H2 O'
_chemical_formula_sum            'C14 H17 N6 O2.5 S2'
_chemical_formula_weight         373.47
_chemical_name_common            'sulfamethizole:4-aminopyridine hemihydrate'
_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
_cell_angle_alpha                80.078(4)
_cell_angle_beta                 77.538(4)
_cell_angle_gamma                87.524(4)
_cell_formula_units_Z            4
_cell_length_a                   8.2663(4)
_cell_length_b                   13.2756(6)
_cell_length_c                   16.3969(7)
_cell_measurement_reflns_used    612
_cell_measurement_temperature    293
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      2.52
_cell_volume                     1730.69(14)
_computing_cell_refinement       'SET4 (de Boer & Duisenberg, 1984)'
_computing_data_collection
'Locally modified CAD4 Software (Enraf-Nonius, 1989)'
_computing_data_reduction        'HELENA (Spek, 1997)'
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293
_diffrn_detector_area_resol_mean 18.4
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Oxford Xcalibur,Eos(Nova) CCD detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0914
_diffrn_reflns_av_sigmaI/netI    0.0592
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            22639
_diffrn_reflns_reduction_process
;
;
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.52
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.332
_exptl_absorpt_correction_T_max  0.949
_exptl_absorpt_correction_T_min  0.899
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrysAlis RED (Oxford Diffraction,2009)'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.433
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             780
_exptl_crystal_size_max          0.330
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.160
_refine_diff_density_max         0.484
_refine_diff_density_min         -0.382
_refine_diff_density_rms         0.072
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     462
_refine_ls_number_reflns         6082
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0684
_refine_ls_R_factor_gt           0.0573
_refine_ls_shift/su_max          0.013
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0996P)^2^+0.3362P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1561
_refine_ls_wR_factor_ref         0.1710
_reflns_number_gt                4965
_reflns_number_total             6082
_reflns_threshold_expression     >2\s(i)
_cod_data_source_file            cg5016687_si_003.cif
_cod_data_source_block           smzAMP
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 

 Adding full bibliography for 4512912--4513016.cif.
;
_cod_database_code               4513013