Synthesis of Selenenium Ions: Isolation of Highly Conjugated, pH-Sensitive 4,4′-Bis(methylimino)-1,1′-binaphthylene-5-diselenenium(II) Triflate
Rakesh, Prakul; Singh, Harkesh B.; Butcher, Ray J.; Organometallics 32 (2013) 7275–; doi:10.1021/om400460z

data_4082067
_publ_section_title
;
 Synthesis of Selenenium Ions: Isolation of Highly Conjugated,
 pH-Sensitive
 4,4&#x2032;-Bis(methylimino)-1,1&#x2032;-binaphthylene-5-diselenenium(II)
 Triflate
;
_journal_issue                   24
_journal_name_full               Organometallics
_journal_page_first              7275
_journal_paper_doi               10.1021/om400460z
_journal_volume                  32
_journal_year                    2013
_chemical_formula_moiety         'C12 H12 Br N Se'
_chemical_formula_sum            'C12 H12 Br N Se'
_chemical_formula_weight         329.10
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
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_symmetry_space_group_name_Hall  '-P 2ac 2ab'
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_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   7.21921(17)
_cell_length_b                   11.7082(3)
_cell_length_c                   29.1083(7)
_cell_measurement_reflns_used    3366
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      77.4406
_cell_measurement_theta_min      4.5534
_cell_volume                     2460.35(10)
_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan  5 2010,16:28:46)
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan  5 2010,16:28:46)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan  5 2010,16:28:46)
;
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 10.5081
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Xcalibur, Ruby, Gemini'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0208
_diffrn_reflns_av_sigmaI/netI    0.0187
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            6571
_diffrn_reflns_theta_full        67.50
_diffrn_reflns_theta_max         77.66
_diffrn_reflns_theta_min         6.08
_exptl_absorpt_coefficient_mu    7.661
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.23789
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan  5 2010,16:28:46)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.777
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1280
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.835
_refine_diff_density_min         -0.375
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     138
_refine_ls_number_reflns         2578
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0485
_refine_ls_R_factor_gt           0.0378
_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^)+(0.0583P)^2^+1.9965P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1056
_refine_ls_wR_factor_ref         0.1108
_reflns_number_gt                2017
_reflns_number_total             2578
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om400460z_si_002.cif
_cod_data_source_block           17
_cod_original_cell_volume        2460.34(10)
_cod_database_code               4082067