Stereochemical basis for activity in thiadiazole anticonvulsants: 1-[5-(biphenyl-2-yl)-1,3,4-thiadiazol-2-yl]methanaminium chloride and two inactive analogues, 2-(biphenyl-4-yl)-5-[2-(1-methylethylidene)hydrazino]-1,3,4-thiadiazole and the methanol solvate of its hydrochloride salt
Camerman, Arthur; Hempel, Andrew; Mastropaolo, Donald; Camerman, Norman; Acta Crystallographica Section C 61 (2005) o427–o430; doi:10.1107/S0108270105015891

data_2015001
_publ_section_title
;
 Stereochemical basis for activity in thiadiazole anticonvulsants:
 1-[5-(biphenyl-2-yl)-1,3,4-thiadiazol-2-yl]methanaminium chloride and
 two inactive analogues,
 2-(biphenyl-4-yl)-5-[2-(1-methylethylidene)hydrazino]-1,3,4-thiadiazole
 and the methanol solvate of its hydrochloride salt
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o427
_journal_page_last               o430
_journal_paper_doi               10.1107/S0108270105015891
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C15 H14 N3 S +, Cl -'
_chemical_formula_moiety         'C15 H14 N3 S +, Cl -'
_chemical_formula_sum            'C15 H14 Cl N3 S'
_chemical_formula_weight         303.80
_chemical_name_systematic
;
1-[5-(biphenyl-2-yl)-1,3,4-thiadiazol-2-yl]methanaminium chloride
;
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.0
_cell_angle_beta                 90.0
_cell_angle_gamma                90.0
_cell_formula_units_Z            4
_cell_length_a                   28.882(6)
_cell_length_b                   9.198(2)
_cell_length_c                   5.6050(10)
_cell_measurement_reflns_used    32
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      47
_cell_measurement_theta_min      21
_cell_volume                     1489.0(5)
_computing_cell_refinement       'Picker Operating Manual'
_computing_data_collection       'Picker Operating Manual (Picker, 1967)'
_computing_data_reduction        'DATRDN The X-ray System (Stewart, 1976)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'PICKER FACS-1 four-circle diffractometer'
_diffrn_measurement_method       '\w?/2\q  scan'
_diffrn_radiation_monochromator  'Ni filtered radiation'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    7.1023
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            1515
_diffrn_reflns_theta_full        64.98
_diffrn_reflns_theta_max         64.98
_diffrn_reflns_theta_min         3.06
_diffrn_standards_decay_%        2.7
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    3.516
_exptl_absorpt_correction_T_max  0.753
_exptl_absorpt_correction_T_min  0.630
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North <i>et al.</i>, 1968)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.355
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.255
_refine_diff_density_min         -0.228
_refine_ls_abs_structure_details 'Flack (1983), number of Friedel pairs?'
_refine_ls_abs_structure_Flack   0.02(5)
_refine_ls_extinction_coef       0.0016(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     185
_refine_ls_number_reflns         1515
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0923
_refine_ls_R_factor_gt           0.0565
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+1.4774P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1158
_refine_ls_wR_factor_ref         0.1235
_reflns_number_gt                1138
_reflns_number_total             1515
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gd1394.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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               2015001
_cod_database_fobs_code          2015001