1,2,7,8-Tetramethyl-4,5-dihydro-3a,5a-diazapyrene ditriflate
Coe, Benjamin J.; Fitzgerald, Emma C.; Raftery, James; Acta Crystallographica Section E 62 (2006) o4335–o4336; doi:10.1107/S1600536806035379

data_2210700
_publ_section_title
;
 1,2,7,8-Tetramethyl-4,5-dihydro-3a,5a-diazapyrene ditriflate
;
_journal_coeditor_code           LH2168
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o4335
_journal_page_last               o4336
_journal_paper_doi               10.1107/S1600536806035379
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C18 H20 N2 2+, 2C1 F3 O3 S1 -'
_chemical_formula_moiety         'C18 H20 N2 2+, 2C1 F3 O3 S1 -'
_chemical_formula_sum            'C20 H20 F6 N2 O6 S2'
_chemical_formula_weight         562.50
_chemical_name_systematic
;
1,2,7,8-Tetramethyl-4,5-dihydro-3a,5a-diazapyrene ditriflate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 104.2840(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.8820(7)
_cell_length_b                   8.1520(4)
_cell_length_c                   22.5850(12)
_cell_measurement_reflns_used    7763
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.239
_cell_measurement_theta_min      2.7605
_cell_volume                     2298.4(2)
_computing_cell_refinement       'SAINT (Bruker, 2003)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Bruker, 2000)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR2004 (Burla <i>et al.</i>,  2005)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.961
_diffrn_measurement_device_type  'Bruker SMART APEX CCD'
_diffrn_measurement_method       '\f and \w'
_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  0.0579
_diffrn_reflns_av_sigmaI/netI    0.0430
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            19382
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         1.63
_exptl_absorpt_coefficient_mu    0.322
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.626
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1152
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.805
_refine_diff_density_min         -0.668
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     329
_refine_ls_number_reflns         5467
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0570
_refine_ls_R_factor_gt           0.0471
_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^)+(0.0667P)^2^+1.2422P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1256
_refine_ls_wR_factor_ref         0.1311
_reflns_number_gt                4426
_reflns_number_total             5467
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh2168.cif
_cod_data_source_block           II
_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 

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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2210700
_cod_database_fobs_code          2210700