Experimental and Theoretical Investigations of the Contact Ion Pairs Formed by Reactions of the Anions [(EPR2)2N]- (R =iPr,tBu; E = S, Se) with the Cations [(TePR2)2N]+ (R =iPr,tBu)
Stuart D. Robertson; Tristram Chivers; Heikki M. Tuononen; Inorganic Chemistry 48 (2009) 6755–6762; doi:10.1021/ic900703e

data_4302730
_publ_contact_author_address
;
Department of Chemistry
University of Calgary, Calgary, Alberta 
T2N 1N4, Canada
;
_publ_contact_author_name        'Prof. T. Chivers'
_publ_section_title
;
Experimental and Theoretical Investigations of the Contact Ion Pairs Formed
by Reactions of the Anions [(EPR2)2N]- (R =iPr,tBu; E = S, Se) with the
Cations [(TePR2)2N]+ (R =iPr,tBu)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              6755
_journal_page_last               6762
_journal_paper_doi               10.1021/ic900703e
_journal_volume                  48
_journal_year                    2009
_chemical_formula_moiety         'C24 H56 N2 P4 Se2 Te2'
_chemical_formula_sum            'C24 H56 N2 P4 Se2 Te2'
_chemical_formula_weight         909.71
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     Patterson
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 108.08(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.642(2)
_cell_length_b                   22.718(5)
_cell_length_c                   15.812(3)
_cell_measurement_reflns_used    51163
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     3634.0(14)
_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 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.1125
_diffrn_reflns_av_sigmaI/netI    0.0731
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            45208
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.70
_exptl_absorpt_coefficient_mu    3.801
_exptl_absorpt_correction_T_max  0.796
_exptl_absorpt_correction_T_min  0.692
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements 
 Sortav (Blessing 1995)
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.663
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1784
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.635
_refine_diff_density_min         -1.057
_refine_diff_density_rms         0.170
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     323
_refine_ls_number_reflns         6400
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0902
_refine_ls_R_factor_gt           0.0474
_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^)+(0.0398P)^2^+5.0459P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0870
_refine_ls_wR_factor_ref         0.1016
_reflns_number_gt                4317
_reflns_number_total             6400
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic900703e_si_001_3.cif
_cod_data_source_block           sdr7b
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               4302730