A platform with connections in many directions - further remarkable facets to the multifaceted methylbiquinoxen dication.
Leblanc, Nicolas; Genovese, Damiano; De Cola, Luisa; Powell, Annie K.; Physical chemistry chemical physics : PCCP 19 (2017) 6981–6988; doi:10.1039/c6cp07538j

data_7227253
_publ_section_title
;
 A platform with connections in many directions - further remarkable
 facets to the multifaceted methylbiquinoxen dication.
;
_journal_issue                   10
_journal_name_full               'Physical chemistry chemical physics : PCCP'
_journal_page_first              6981
_journal_page_last               6988
_journal_paper_doi               10.1039/c6cp07538j
_journal_volume                  19
_journal_year                    2017
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C20 H22 N4 O2'
_chemical_formula_sum            'C20 H22 N4 O2'
_chemical_formula_weight         350.41
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      61
_symmetry_space_group_name_Hall  '-P 2bc 2ac'
_symmetry_space_group_name_H-M   'P c a b'
_atom_sites_solution_hydrogens   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.3
_audit_creation_date             2015-07-13T13:37:16-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2016-05-12 deposited with the CCDC.
2016-12-08 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.2451(8)
_cell_length_b                   11.0740(7)
_cell_length_c                   15.3632(11)
_cell_measurement_reflns_used    4729
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      27.95
_cell_measurement_theta_min      2.65
_cell_measurement_wavelength     0.71073
_cell_volume                     1743.0(2)
_computing_cell_refinement       'STOE X-AREA'
_computing_data_collection       'STOE X-AREA'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 2012)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 2008)'
_diffrn_ambient_temperature      180
_diffrn_detector                 'image plate (34 cm diameter)'
_diffrn_detector_area_resol_mean 6.67
_diffrn_detector_type            STOE
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_details      ' 149 frames, detector distance = 115 mm'
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'STOE IPDS 2T'
_diffrn_measurement_method       'rotation method'
_diffrn_radiation_collimation    '0.5 mm diameter, monocapillary'
_diffrn_radiation_monochromator  'plane graphite'
_diffrn_radiation_polarisn_norm  0
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0545
_diffrn_reflns_Laue_measured_fraction_full 0.988
_diffrn_reflns_Laue_measured_fraction_max 0.984
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            8828
_diffrn_reflns_point_group_measured_fraction_full 0.988
_diffrn_reflns_point_group_measured_fraction_max 0.984
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.37
_diffrn_reflns_theta_min         3.016
_diffrn_source
'sealed X-ray tube, 12 x 0.4 mm long-fine focus'
_diffrn_source_current           40
_diffrn_source_power             2.000
_diffrn_source_voltage           50
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.335
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             744
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.222
_exptl_crystal_size_min          0.194
_refine_diff_density_max         0.184
_refine_diff_density_min         -0.198
_refine_diff_density_rms         0.05
_refine_ls_extinction_coef       0.066(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.015
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     163
_refine_ls_number_reflns         1941
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.015
_refine_ls_R_factor_all          0.0683
_refine_ls_R_factor_gt           0.0476
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0824P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1214
_refine_ls_wR_factor_ref         0.1326
_reflns_number_gt                1339
_reflns_number_total             1941
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6cp07538j3.cif
_cod_data_source_block           shelx
_cod_depositor_comments
'Adding full bibliography for 7227252--7227255.cif.'
_cod_database_code               7227253