Telluroselenophosphonium ions: their unusual soft-soft interactions with iodotellurate anions.
Hrib, Cristian G.; Jeske, Jörg; Jones, Peter G.; du Mont, Wolf-W; Dalton transactions (Cambridge, England : 2003)  (2007) 3483–3485; doi:10.1039/b708370j

data_7006034
_publ_section_title
;
 Telluroselenophosphonium ions: their unusual soft-soft interactions
 with iodotellurate anions.
;
_journal_issue                   32
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3483
_journal_page_last               3485
_journal_paper_doi               10.1039/b708370j
_journal_year                    2007
_chemical_formula_sum            'C25 H39 I2 P Se Te2'
_chemical_formula_weight         958.49
_chemical_name_systematic
;
?
;
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 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                 103.726(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.1191(6)
_cell_length_b                   22.0684(7)
_cell_length_c                   14.4059(8)
_cell_measurement_reflns_used    7278
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      30
_cell_measurement_theta_min      2
_cell_volume                     3125.1(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Siemens XP'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      133(2)
_diffrn_detector_area_resol_mean 8.192
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD'
_diffrn_measurement_method       '\w- and \f-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  0.0256
_diffrn_reflns_av_sigmaI/netI    0.0239
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            33390
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.53
_diffrn_reflns_theta_min         1.85
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    5.070
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.5797
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    2.037
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'cut tablet'
_exptl_crystal_F_000             1792
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.674
_refine_diff_density_min         -0.403
_refine_diff_density_rms         0.078
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.013(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.995
_refine_ls_hydrogen_treatment    'methyls rigid and other riding'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     290
_refine_ls_number_reflns         9488
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.995
_refine_ls_R_factor_all          0.0198
_refine_ls_R_factor_gt           0.0182
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0200P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0382
_refine_ls_wR_factor_ref         0.0385
_reflns_number_gt                9073
_reflns_number_total             9488
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b708370j.txt
_cod_data_source_block           bujor
_cod_original_sg_symbol_H-M      Cc
_cod_database_code               7006034