Synthesis, Multinuclear NMR Spectra, and X-ray Structures of tBu2PNP(I)tBu2 and EPR2NP(I)R2 (E = Se, Te; R =iPr,tBu)
Jamie S. Ritch; Stuart D. Robertson; Maarit Risto; Tristram Chivers; Inorganic Chemistry 49 (2010) 4681–4686; doi:10.1021/ic1005055

data_4315544
_publ_section_title
;
 Synthesis, Multinuclear NMR Spectra, and X-ray Structures of
 tBu2PNP(I)tBu2 and EPR2NP(I)R2 (E = Se, Te; R =iPr,tBu)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4681
_journal_page_last               4686
_journal_paper_doi               10.1021/ic1005055
_journal_volume                  49
_journal_year                    2010
_chemical_formula_sum            'C16 H36 I N P2 Te'
_chemical_formula_weight         558.90
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.1071(16)
_cell_length_b                   14.262(3)
_cell_length_c                   18.862(4)
_cell_measurement_reflns_used    4864
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.47
_cell_measurement_theta_min      2.16
_cell_volume                     2180.9(8)
_computing_cell_refinement       'Nonius DENZO'
_computing_data_collection       'Nonius COLLECT'
_computing_data_reduction        'Nonius DENZO'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'phi\omega 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  0.0249
_diffrn_reflns_av_sigmaI/netI    0.0213
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            4864
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         2.16
_exptl_absorpt_coefficient_mu    2.923
_exptl_absorpt_correction_T_max  0.3227
_exptl_absorpt_correction_T_min  0.2914
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'HKL Scalepack (Otwinowski and Minor, 1997)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.702
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1096
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.52
_exptl_crystal_size_min          0.50
_refine_diff_density_max         0.612
_refine_diff_density_min         -1.069
_refine_diff_density_rms         0.175
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.15(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.162
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         4864
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.162
_refine_ls_R_factor_all          0.0303
_refine_ls_R_factor_gt           0.0302
_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^)+(0.0400P)^2^+6.4152P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0818
_refine_ls_wR_factor_ref         0.0819
_reflns_number_gt                4851
_reflns_number_total             4864
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic1005055_si_001_4.cif
_cod_data_source_block           compound3b'-I
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_cell_volume        2180.8(8)
_cod_database_code               4315544