Diarylhalotelluronium(iv) cations [(8-Me2NC10H6)2TeX](+) (X = Cl, Br, I) stabilized by intramolecularly coordinating N-donor substituents.
Beckmann, Jens; Bolsinger, Jens; Duthie, Andrew; Finke, Pamela; Dalton transactions (Cambridge, England : 2003) 42 (2013) 12193–12202; doi:10.1039/c3dt51011e

data_7021709
_publ_section_title
;
 Diarylhalotelluronium(iv) cations [(8-Me2NC10H6)2TeX](+) (X = Cl, Br, I)
 stabilized by intramolecularly coordinating N-donor substituents.
;
_journal_issue                   34
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              12193
_journal_page_last               12202
_journal_paper_doi               10.1039/c3dt51011e
_journal_volume                  42
_journal_year                    2013
_chemical_formula_sum            'C24 H24 I4 N2 Te'
_chemical_formula_weight         975.65
_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                 97.28(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.837(3)
_cell_length_b                   17.587(9)
_cell_length_c                   19.891(11)
_cell_measurement_temperature    150
_cell_volume                     2719(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_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  0.1054
_diffrn_reflns_av_sigmaI/netI    0.1308
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            21035
_diffrn_reflns_theta_full        29.21
_diffrn_reflns_theta_max         29.21
_diffrn_reflns_theta_min         2.06
_exptl_absorpt_coefficient_mu    5.650
_exptl_absorpt_correction_T_max  0.8140
_exptl_absorpt_correction_T_min  0.4380
_exptl_absorpt_correction_type   refdelf
_exptl_absorpt_process_details
'Walker, N. & Stuart, D. (1983) Acta Cryst. A39, 158-166)'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    2.383
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1784
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.853
_refine_diff_density_min         -1.709
_refine_diff_density_rms         0.245
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.802
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         7292
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.802
_refine_ls_R_factor_all          0.1188
_refine_ls_R_factor_gt           0.0434
_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^)+(0.0494P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0814
_refine_ls_wR_factor_ref         0.1129
_reflns_number_gt                3531
_reflns_number_total             7292
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt51011e.txt
_cod_data_source_block           5
_cod_original_sg_symbol_H-M      'P 2 1 / c'
_cod_database_code               7021709