Formation of N-bridgehead 1,2,5-thiadiazolium and selenadiazolium rings through an intramolecular cyclisation reaction.
Bacon, Catherine E; Eisler, Dana J; Melen, Rebecca L; Rawson, Jeremy M; Chemical communications (Cambridge, England)  (2008) 4924–4926; doi:10.1039/b809987a

data_7103426
_publ_section_title
;
 Formation of N-bridgehead 1,2,5-thiadiazolium and selenadiazolium
 rings through an intramolecular cyclisation reaction.
;
_journal_issue                   40
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              4924
_journal_page_last               4926
_journal_paper_doi               10.1039/b809987a
_journal_year                    2008
_chemical_formula_moiety         'C11 H10 Cl N3 O S'
_chemical_formula_sum            'C11 H10 Cl N3 O S'
_chemical_formula_weight         267.73
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 111.0242(16)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   24.1059(6)
_cell_length_b                   4.9368(2)
_cell_length_c                   20.7418(6)
_cell_measurement_reflns_used    7515
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     2304.07(13)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_reduction
;
HKL Denzo and Scalepack (Otwinowski & Minor 1997)
;
_computing_publication_material  'SHELXL-97 (Sheldrick 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick 1997)'
_computing_structure_solution    'SHELXL-97 (Sheldrick 1997)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       'Thin slice \w and \f scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0507
_diffrn_reflns_av_sigmaI/netI    0.0482
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            9748
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.23
_exptl_absorpt_coefficient_mu    0.498
_exptl_absorpt_correction_T_max  0.961
_exptl_absorpt_correction_T_min  0.875
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements
Sortav (Blessing 1995)
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.544
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1104
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.298
_refine_diff_density_min         -0.257
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     162
_refine_ls_number_reflns         2635
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.0626
_refine_ls_R_factor_gt           0.0388
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0285P)^2^+3.3848P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0794
_refine_ls_wR_factor_ref         0.0884
_reflns_number_gt                1982
_reflns_number_total             2635
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b809987a.txt
_cod_data_source_block           jr0708a
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 
;
_cod_original_sg_symbol_Hall     -C2yc
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7103426