Mixed Chloride/Phosphine Complexes of the Dirhenium Core. 6. Rare or Unprecedented Isomers of [Re2Cl6(PR3)2] Stoichiometry
F. Albert Cotton; Evgeny V. Dikarev; Marina A. Petrukhina; Inorganic Chemistry 38 (1999) 3889–3894; doi:10.1021/ic9906095

data_4322223
_publ_section_title
;
 Mixed Chloride/Phosphine Complexes of the Dirhenium Core. 6. Rare or
 Unprecedented Isomers of [Re2Cl6(PR3)2] Stoichiometry
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              3889
_journal_page_last               3894
_journal_paper_doi               10.1021/ic9906095
_journal_volume                  38
_journal_year                    1999
_chemical_compound_source        synthesized
_chemical_formula_analytical     'not measured'
_chemical_formula_moiety
;
 [N (C4 H9)4](+) [Re2 Cl6 (P (C2 H5)2 (C6 H5))2](-)
;
_chemical_formula_structural     '[n-Bu4N][1,7-Re2Cl6(PEt2Ph)2] '
_chemical_formula_sum            'C36 H66 Cl6 N P2 Re2'
_chemical_formula_weight         1159.94
_chemical_melting_point          ?
_chemical_name_systematic
; 
 Hexachloro-bis(diethylphenylphosphine)-di-rhenium (II, III),
 1,7-isomer, tetrabutylammonium salt
;
_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
_cell_angle_alpha                88.01(1)
_cell_angle_beta                 82.64(1)
_cell_angle_gamma                88.47(1)
_cell_formula_units_Z            2
_cell_length_a                   11.868(1)
_cell_length_b                   12.125(2)
_cell_length_c                   15.375(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      19.00
_cell_measurement_theta_min      17.00
_cell_volume                     2192.4(6)
_computing_cell_refinement       'CAD4 EXPRESS'
_computing_data_collection       'CAD4 V.5 (Enraf-Nonius, 1989)'
_computing_data_reduction        'XCAD4 (Harms, 1993)'
_computing_molecular_graphics    'SHELXTL V.5 (Siemens, 1994)'
_computing_publication_material  CIFTAB
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXTL V.5 (Siemens, 1994)'
_diffrn_ambient_temperature      173(2)
_diffrn_measurement_device       'Enraf-Nonius CAD4'
_diffrn_measurement_method       \w--\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0148
_diffrn_reflns_av_sigmaI/netI    0.0288
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            8429
_diffrn_reflns_theta_max         24.97
_diffrn_reflns_theta_min         2.05
_diffrn_standards_decay_%        4.7
_diffrn_standards_interval_count 600
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    5.981
_exptl_absorpt_correction_T_max  0.9989
_exptl_absorpt_correction_T_min  0.6469
_exptl_absorpt_correction_type   'empirical, via \y scans'
_exptl_crystal_colour            greenish-brown
_exptl_crystal_density_diffrn    1.757
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    none
_exptl_crystal_description       block-shaped
_exptl_crystal_F_000             1142
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.088
_refine_diff_density_min         -0.846
_refine_diff_density_rms         0.131
_refine_ls_extinction_coef       noref
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.101
_refine_ls_goodness_of_fit_obs   1.115
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     388
_refine_ls_number_reflns         7686
_refine_ls_number_restraints     82
_refine_ls_restrained_S_all      1.124
_refine_ls_restrained_S_obs      1.141
_refine_ls_R_factor_all          0.0301
_refine_ls_R_factor_obs          0.0247
_refine_ls_shift/esd_max         0.002
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0286P)^2^+4.3695P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0671
_refine_ls_wR_factor_obs         0.0646
_reflns_number_observed          6972
_reflns_number_total             7686
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ic9906095_4.cif
_cod_data_source_block           '[n-Bu4N][1,7-Re2Cl6(PEt2Ph)2]'
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

Automatic conversion script
Id: cif_fix_values 1673 2011-04-08 12:14:43Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0286P)^2^+4.3695P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0286P)^2^+4.3695P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               4322223