7-Methyl-3-(2-methylphenyl)-1,2,4-triazolo[3,4-<i>b</i>][1,3]benzothiazole, (I), and 7-methyl-3-(4-methylphenyl)-1,2,4-triazolo[3,4-<i>b</i>][1,3]benzothiazole, (II)
Puviarasan, K.; Govindasamy, L.; Shanmuga Sundara Raj, S.; Velmurugan, D.; Jayanthi, G.; Hoong-Kun Fun; Acta Crystallographica Section C 55 (1999) 948–951; doi:10.1107/S0108270199000864

data_2008608
_publ_section_title
;
 7-Methyl-3-(2-methylphenyl)-1,2,4-triazolo[3,4-<i>b</i>][1,3]benzothiazole,
 (I), and
 7-methyl-3-(4-methylphenyl)-1,2,4-triazolo[3,4-<i>b</i>][1,3]benzothiazole,
 (II)
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              948
_journal_page_last               951
_journal_paper_doi               10.1107/S0108270199000864
_journal_volume                  55
_journal_year                    1999
_chemical_formula_sum            'C16 H13 N3 S'
_chemical_formula_weight         279.35
_chemical_name_systematic
;
7-methyl-3-(2-methylphenyl)-1,2,4-triazolo-[3,4-b][1,3]benzothiazole
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 102.2970(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.7934(2)
_cell_length_b                   9.50050(10)
_cell_length_c                   15.29580(10)
_cell_measurement_reflns_used    3498
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      33.24
_cell_measurement_theta_min      1.52
_cell_volume                     1390.50(3)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  'SHELXTL and PARST (Nardelli, 1995)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       'Siemens SMART CCD area-detector'
_diffrn_measurement_method       \w-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.054
_diffrn_reflns_av_sigmaI/netI    0.080
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            8672
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    0.225
_exptl_absorpt_correction_T_max  0.965
_exptl_absorpt_correction_T_min  0.914
_exptl_absorpt_correction_type   'empirical (SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.334
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.306
_refine_diff_density_min         -0.292
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.959
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         3175
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.959
_refine_ls_R_factor_all          0.119
_refine_ls_R_factor_gt           0.056
_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^)+(0.0808P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.163
_reflns_number_gt                1751
_reflns_number_total             3175
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            os1049.cif
_cod_data_source_block           vpv2m
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2008608
_cod_database_fobs_code          2008608