Synthesis and structure of arylselenium(ii) and aryltellurium(ii) cations based on rigid 5-tert-butyl-1,3-bis-(N-pentylbenzimidazol-2'-yl)benzenes.
Rani, Varsha; Boda, Manjusha; Raju, Saravanan; Naresh Patwari, G.; Singh, Harkesh B.; Butcher, Ray J.; Dalton transactions (Cambridge, England : 2003) 47 (2018) 9114–9127; doi:10.1039/c8dt01148f

data_7046613
_publ_section_title
;
 Synthesis and structure of arylselenium(ii) and aryltellurium(ii) cations
 based on rigid 5-tert-butyl-1,3-bis-(N-pentylbenzimidazol-2'-yl)benzenes.
;
_journal_issue                   27
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              9114
_journal_page_last               9127
_journal_paper_doi               10.1039/c8dt01148f
_journal_volume                  47
_journal_year                    2018
_chemical_formula_moiety         '2(C34 H41 N4 Se), Br4 Hg'
_chemical_formula_sum            'C68 H82 Br4 Hg N8 Se2'
_chemical_formula_weight         1689.57
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-07-18 deposited with the CCDC.
2018-06-11 downloaded from the CCDC.
;
_cell_angle_alpha                71.363(4)
_cell_angle_beta                 72.335(4)
_cell_angle_gamma                83.772(4)
_cell_formula_units_Z            2
_cell_length_a                   13.667(4)
_cell_length_b                   13.680(4)
_cell_length_c                   19.826(5)
_cell_measurement_reflns_used    9931
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.127
_cell_measurement_theta_min      2.203
_cell_volume                     3346.5(16)
_computing_cell_refinement       'Bruker Apex 2'
_computing_data_collection       'Bruker Apex 2'
_computing_data_reduction        'Bruker Apex 2'
_computing_molecular_graphics    'Bruker SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'Bruker SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'Sir92 (Altomare et al. 1993)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.957
_diffrn_measurement_device_type  'Bruker Apex 2'
_diffrn_measurement_method       '\w scans'
_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  0.0335
_diffrn_reflns_av_sigmaI/netI    0.0416
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            58608
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         30.56
_diffrn_reflns_theta_min         1.56
_exptl_absorpt_coefficient_mu    5.821
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.5617
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Sheldrick, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.677
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1668
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.270
_exptl_crystal_size_min          0.250
_refine_diff_density_max         2.496
_refine_diff_density_min         -1.709
_refine_diff_density_rms         0.164
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     825
_refine_ls_number_reflns         19660
_refine_ls_number_restraints     220
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0684
_refine_ls_R_factor_gt           0.0452
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0670P)^2^+5.3615P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1100
_refine_ls_wR_factor_ref         0.1209
_reflns_number_gt                15038
_reflns_number_total             19660
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8dt01148f2.cif
_cod_data_source_block           shelxl_CCDC2
_cod_depositor_comments
'Adding full bibliography for 7046607--7046616.cif.'
_cod_original_cell_volume        3346.6(15)
_cod_database_code               7046613