The geometry and structural properties of the 4,8,12-trioxa-4,8,12,12c-tetrahydrodibenzo[cd,mn]pyrene system in the cationic state. Structures of a planar organic cation with various monovalent and divalent anions
Krebs, Frederik C.; Laursen, Bo W.; Johannsen, Ib; Faldt, André; Bechgaard, Klaus; Jacobsen, Claus S.; Thorup, Niels; Boubekeur, Kamal; Acta Crystallographica, Section B: Structural Science 55 (1999) 410–423; doi:10.1107/S0108768198016140

data_2003080
_publ_section_title
;
 The geometry and structural properties of the
 4,8,12-trioxa-4,8,12,12c-tetrahydrodibenzo[cd,mn]pyrene system
 in the cationic state. Structures of a planar organic cation with
 various monovalent and divalent anions
;
_journal_coden_ASTM              ASBSDK
_journal_issue                   3
_journal_name_full
;
 Acta Crystallographica, Section B: Structural Science
;
_journal_page_first              410
_journal_page_last               423
_journal_paper_doi               10.1107/S0108768198016140
_journal_volume                  55
_journal_year                    1999
_chemical_formula_moiety         'C19 H9 O3,As F6'
_chemical_formula_sum            'C19 H9 As F6 O3'
_chemical_formula_weight         474.18
_chemical_name_systematic
'4,8,12-trioxa-4,8,12,12c-tetrahydro-dibenzo[cd,mn]pyrenium hexafluoroarsenate'
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   13.550(3)
_cell_length_b                   15.807(3)
_cell_length_c                   32.201(6)
_cell_measurement_temperature    293(2)
_cell_volume                     6897(2)
_computing_cell_refinement       'SAINT Siemens'
_computing_data_collection       'SMART Siemens'
_computing_data_reduction        'SAINT Siemens'
_computing_molecular_graphics    'SHELXTL (Sheldrick)'
_computing_publication_material  'XCIF (Sheldrick)'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device_type  'Siemens SMART CCD'
_diffrn_measurement_method       'omega scan, frame data integration'
_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  0.0743
_diffrn_reflns_av_sigmaI/netI    0.0337
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            69140
_diffrn_reflns_theta_max         26.32
_diffrn_reflns_theta_min         1.26
_exptl_absorpt_coefficient_mu    2.053
_exptl_absorpt_correction_T_max  0.603
_exptl_absorpt_correction_T_min  0.404
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.827
_exptl_crystal_description       plate
_exptl_crystal_F_000             3744
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.18
_refine_diff_density_max         1.046
_refine_diff_density_min         -0.968
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.068
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     523
_refine_ls_number_reflns         7000
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0967
_refine_ls_R_factor_gt           0.0572
_refine_ls_shift/su_max          0.376
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0824P)^2^+14.1168P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1779
_reflns_number_observed          4567
_reflns_number_total             7003
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            os0007.cif
_cod_data_source_block           5
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0824P)^2^+14.1168P] where P=(Fo^2^+2Fc^2^)/3'
was changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0824P)^2^+14.1168P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        6897.(2)
_cod_database_code               2003080