TeX4 (X = F, Cl, Br) as Lewis acids‒complexes with soft thio- and seleno-ether ligands.
Hector, Andrew L.; Jolleys, Andrew; Levason, William; Reid, Gillian; Dalton transactions (Cambridge, England : 2003) 41 (2012) 10988–10999; doi:10.1039/c2dt30968h

data_7020208
_publ_section_title
;
 TeX4 (X = F, Cl, Br) as Lewis acids--complexes with soft thio- and
 seleno-ether ligands.
;
_journal_issue                   36
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              10988
_journal_page_last               10999
_journal_paper_doi               10.1039/c2dt30968h
_journal_volume                  41
_journal_year                    2012
_chemical_formula_moiety         'C5 H12 Cl4 S2 Te'
_chemical_formula_sum            'C5 H12 Cl4 S2 Te'
_chemical_formula_weight         405.67
_chemical_name_systematic
;
tetrachloro(1,3-Bis(methylsulfanyl)propane-S,S')tellurium(IV)
;
_space_group_crystal_system      tetragonal
_space_group_IT_number           88
_space_group_name_Hall           '-I 4ad'
_space_group_name_H-M_alt        'I 41/a'
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     heavy
_atom_sites_solution_secondary   difmap
_audit_creation_date             2011-12-30
_audit_creation_method           'SHELXL-97 + hand edit'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   9.881(3)
_cell_length_b                   9.881(3)
_cell_length_c                   26.388(8)
_cell_measurement_reflns_used    3122
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.3
_cell_measurement_theta_min      2.9
_cell_volume                     2576.4(14)
_computing_cell_refinement
'CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)'
_computing_data_collection
'CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)'
_computing_data_reduction
'CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_type            'Rigaku HG Saturn724+ (2x2 bin mode)'
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'Four-circle \k diffractometer'
_diffrn_measurement_device_type  'Rigaku AFC12'
_diffrn_measurement_method       'Profile data from \w-scans'
_diffrn_radiation_collimation    'Confocal mirrors, HF VariMax'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0544
_diffrn_reflns_av_sigmaI/netI    0.0333
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            12362
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         2.92
_diffrn_source                   'Rotating anode X-ray tube'
_diffrn_source_type              'Rigaku FR-E+ SuperBright'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.416
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.808
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Jacobson, R.A. (1998). REQAB. Private communication to the
Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    2.092
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1552
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.656
_refine_diff_density_min         -0.800
_refine_diff_density_rms         0.132
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.211
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     58
_refine_ls_number_reflns         1596
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.211
_refine_ls_R_factor_all          0.0423
_refine_ls_R_factor_gt           0.0415
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+19.5788P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0668
_refine_ls_wR_factor_ref         0.0670
_reflns_number_gt                1575
_reflns_number_total             1596
_reflns_threshold_expression     I>\s(I)
_cod_data_source_file            c2dt30968h.txt
_cod_data_source_block           11aj0108
_cod_database_code               7020208