W2Cl4(NR2)2(PR'3)2 Molecules. 5. Preparation and Characterization of W2Cl4(NEt2)2(L-L) (L-L = dmpm, dmpe, dppe), W2Cl4(NBu2)2(L-L) (L-L = dmpm, dmpe), and W2Cl4(NHex2)2(dmpm). First Complexes with Bridging Diphosphine Ligands in a cis,trans-Stereochemistry
F. Albert Cotton; Evgeny V. Dikarev; Wai-Yeung Wong; Inorganic Chemistry 36 (1997) 902–912; doi:10.1021/ic961151z

data_4323335
_publ_section_title
;
 W2Cl4(NR2)2(PR'3)2 Molecules. 5. Preparation and Characterization of
 W2Cl4(NEt2)2(L-L) (L-L = dmpm, dmpe, dppe), W2Cl4(NBu2)2(L-L) (L-L =
 dmpm, dmpe), and W2Cl4(NHex2)2(dmpm). First Complexes with Bridging
 Diphosphine Ligands in a cis,trans-Stereochemistry
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              902
_journal_page_last               912
_journal_paper_doi               10.1021/ic961151z
_journal_volume                  36
_journal_year                    1997
_chemical_compound_source        synthesized
_chemical_formula_analytical     'not measured'
_chemical_formula_moiety         'C36 H74 Cl4 N2 P2 W2'
_chemical_formula_structural     cis,cis-W2Cl4(n-Hex2N)2(DMPM).C7H8
_chemical_formula_sum            'C36 H74 Cl4 N2 P2 W2'
_chemical_formula_weight         1106.41
_chemical_name_common
;
 cis,cis-Tetrachloro-bis(dihexylamido)-bis(dimethylphosphino)methane
 ditungsten(III)
;
_chemical_name_systematic
; 
 1,1,2,2-Tetrachloro-1,2-bis(dihexylamido)-(cis,cis)-bis(dimethyl-
 phosphino)methane ditungsten(III) 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 103.96(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   18.368(4)
_cell_length_b                   17.060(2)
_cell_length_c                   30.414(4)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      15.50
_cell_measurement_theta_min      13.95
_cell_volume                     9249(3)
_computing_cell_refinement       'CAD4 V.5.0'
_computing_data_collection       'CAD4 V.5.0'
_computing_data_reduction        'SDP (Enraf-Nonius, 1979)'
_computing_molecular_graphics    'SHELXTL V.5 (Siemens, 1994)'
_computing_publication_material  CIFTAB
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measurement_device       'Enraf-Nonius CAD4'
_diffrn_measurement_method       \w--\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.70930
_diffrn_reflns_av_R_equivalents  0.0409
_diffrn_reflns_av_sigmaI/netI    0.0750
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            6675
_diffrn_reflns_theta_max         22.95
_diffrn_reflns_theta_min         2.28
_diffrn_standards_decay_%        5.5
_diffrn_standards_interval_count 300
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    5.296
_exptl_absorpt_correction_T_max  0.9974
_exptl_absorpt_correction_T_min  0.7879
_exptl_absorpt_correction_type   'empirical via \y scans'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.589
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    none
_exptl_crystal_description       block-shaped
_exptl_crystal_F_000             4400
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.18
_refine_diff_density_max         2.608
_refine_diff_density_min         -0.875
_refine_diff_density_rms         0.178
_refine_ls_extinction_coef       noref
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.047
_refine_ls_goodness_of_fit_obs   1.110
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     411
_refine_ls_number_reflns         6439
_refine_ls_number_restraints     13
_refine_ls_restrained_S_all      1.081
_refine_ls_restrained_S_obs      1.109
_refine_ls_R_factor_all          0.1069
_refine_ls_R_factor_obs          0.0468
_refine_ls_shift/esd_max         0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0532P)^2^+126.5200P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1325
_refine_ls_wR_factor_obs         0.1069
_reflns_number_observed          4117
_reflns_number_total             6441
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ic961151z_7.cif
_cod_data_source_block           W2Cl4(NHex2)2(DMPM).C7H8
_cod_depositor_comments
;
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^)+(0.0532P)^2^+126.5200P] 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^)+(0.0532P)^2^+126.5200P] 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               4323335