Synthesis, spectroscopic and structural characterization of tertiary phosphine tellurium dihalides Et3PTeX2(X = Cl, Br, I).
Konu, Jari; Chivers, Tristram; Dalton transactions (Cambridge, England : 2003)  (2006) 3941–3946; doi:10.1039/b608133a

data_7007649
_publ_section_title
;
 Synthesis, spectroscopic and structural characterization of tertiary
 phosphine tellurium dihalides Et3PTeX2(X = Cl, Br, I).
;
_journal_issue                   32
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3941
_journal_page_last               3946
_journal_paper_doi               10.1039/b608133a
_journal_year                    2006
_chemical_formula_moiety         '2(C12 H31 O2 P2), I4 Te'
_chemical_formula_sum            'C24 H62 I4 O4 P4 Te'
_chemical_formula_weight         1173.82
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_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
_cell_angle_alpha                93.47(3)
_cell_angle_beta                 91.30(3)
_cell_angle_gamma                104.45(3)
_cell_formula_units_Z            2
_cell_length_a                   10.548(2)
_cell_length_b                   11.297(2)
_cell_length_c                   18.344(4)
_cell_measurement_reflns_used    14415
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.02
_cell_measurement_theta_min      2.36
_cell_volume                     2111.2(8)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    'DIAMOND (Brandenburg & Berndt, 1999)'
_computing_publication_material  'WinGX v1.70-01 (L. J. Farrugia)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'KappaCCD (Nonius, FR540C)'
_diffrn_measurement_method       'phi\omega scans'
_diffrn_radiation_monochromator  'horizonally mounted graphite crystal'
_diffrn_radiation_source         'Enraf Nonius FR590D, fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0234
_diffrn_reflns_av_sigmaI/netI    0.0313
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            14415
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.36
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.805
_exptl_absorpt_correction_T_max  0.5812
_exptl_absorpt_correction_T_min  0.5166
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'SADABS (SHELXTL-NT v5.1, Bruker)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.847
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1124
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.16
_refine_diff_density_max         1.186
_refine_diff_density_min         -1.031
_refine_diff_density_rms         0.102
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     349
_refine_ls_number_reflns         7429
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0341
_refine_ls_R_factor_gt           0.0264
_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^)+(0.0234P)^2^+2.8707P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0587
_refine_ls_wR_factor_ref         0.0621
_reflns_number_gt                6407
_reflns_number_total             7429
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b608133a.txt
_cod_data_source_block           2b
_cod_database_code               7007649