Facilitating access to the most easily ionized molecule: an improved synthesis of the key intermediate, W2(hpp)4Cl2, and related compounds.
Cotton, F. Albert; Donahue, James P.; Gruhn, Nadine E.; Lichtenberger, Dennis L.; Murillo, Carlos A.; Timmons, Daren J.; Van Dorn, Laura O.; Villagrán, Dino; Wang, Xiaoping; Inorganic chemistry 45 (2006) 201–213; doi:10.1021/ic0515709

data_4340250
_publ_section_title
;
 Facilitating access to the most easily ionized molecule: an improved
 synthesis of the key intermediate, W2(hpp)4Cl2, and related compounds.
;
_journal_issue                   1
_journal_name_full               'Inorganic chemistry'
_journal_page_first              201
_journal_page_last               213
_journal_paper_doi               10.1021/ic0515709
_journal_volume                  45
_journal_year                    2006
_chemical_formula_moiety
;
 (C30 H48 N12 O2 W2 1+), (P F6 1-) , (C H2 Cl2)
;
_chemical_formula_sum            'C31 H50 Cl2 F6 N12 O2 P W2'
_chemical_formula_weight         1206.40
_chemical_name_common            '[W2(hpp)4(\m-CO)2][PF6],(CH2Cl2)'
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_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                 94.850(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.7824(8)
_cell_length_b                   15.7308(14)
_cell_length_c                   14.3831(13)
_cell_measurement_reflns_used    7322
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      27.494
_cell_measurement_theta_min      2.5845
_cell_volume                     1980.0(3)
_computing_cell_refinement       SAINT
_computing_data_collection       SMART
_computing_data_reduction        SAINT
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker SMART 1000'
_diffrn_measurement_method       '\w scans'
_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  0.0204
_diffrn_reflns_av_sigmaI/netI    0.0425
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            13850
_diffrn_reflns_theta_full        27.55
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         1.92
_exptl_absorpt_coefficient_mu    6.057
_exptl_absorpt_correction_T_max  0.3628
_exptl_absorpt_correction_T_min  0.2305
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    2.024
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1174
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.21
_refine_diff_density_max         1.610
_refine_diff_density_min         -0.897
_refine_diff_density_rms         0.120
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.101(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     488
_refine_ls_number_reflns         8686
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.0354
_refine_ls_R_factor_gt           0.0283
_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^)+(0.0283P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0603
_refine_ls_wR_factor_ref         0.0632
_reflns_number_gt                7618
_reflns_number_total             8686
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0515709si20050914_104451.cif
_cod_data_source_block           cmpd3OneCH2Cl2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      'P  2(1)'
_cod_database_code               4340250