Novel Approach to Intermediates Containing a Tungsten−Arsenic Triple Bond†
Johnson, Brian P.; Schiffer, Michael; Scheer, Manfred; Organometallics 19 (2000) 3404–; doi:10.1021/om0003436

data_4077527
_publ_section_title
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 Novel Approach to Intermediates Containing a Tungsten&#x2212;Arsenic
 Triple Bond&#x2020;
;
_journal_issue                   17
_journal_name_full               Organometallics
_journal_page_first              3404
_journal_paper_doi               10.1021/om0003436
_journal_volume                  19
_journal_year                    2000
_chemical_formula_sum            'C26 H30 As4 O6 W4'
_chemical_formula_weight         1473.58
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 97.73(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.180(2)
_cell_length_b                   16.340(3)
_cell_length_c                   19.866(4)
_cell_measurement_reflns_used    1608
_cell_measurement_temperature    200(1)
_cell_measurement_theta_max      25.91
_cell_measurement_theta_min      2.07
_cell_volume                     3274.5(11)
_computing_cell_refinement       'STOE IPDS software'
_computing_data_collection       'STOE IPDS software'
_computing_data_reduction        'STOE X-RED'
_computing_molecular_graphics    SIEMENS-XP
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(1)
_diffrn_measured_fraction_theta_full 0.951
_diffrn_measured_fraction_theta_max 0.951
_diffrn_measurement_device_type  'STOE IPDS'
_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  0.0568
_diffrn_reflns_av_sigmaI/netI    0.0471
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            23384
_diffrn_reflns_theta_full        25.91
_diffrn_reflns_theta_max         25.91
_diffrn_reflns_theta_min         2.07
_exptl_absorpt_coefficient_mu    18.054
_exptl_absorpt_correction_T_max  0.4239
_exptl_absorpt_correction_T_min  0.1436
_exptl_absorpt_correction_type   numerical
_exptl_crystal_colour            'dark red'
_exptl_crystal_density_diffrn    2.989
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       route
_exptl_crystal_F_000             2648
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.02
_refine_diff_density_max         2.255
_refine_diff_density_min         -1.662
_refine_diff_density_rms         0.291
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.954
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     233
_refine_ls_number_reflns         6066
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.954
_refine_ls_R_factor_all          0.0550
_refine_ls_R_factor_gt           0.0389
_refine_ls_shift/su_max          0.543
_refine_ls_shift/su_mean         0.032
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0689P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0945
_refine_ls_wR_factor_ref         0.1046
_reflns_number_gt                4638
_reflns_number_total             6066
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om0003436.cif
_cod_data_source_block           b
_cod_depositor_comments
;
The following automatic conversions were performed:
'_atom_site_symetry_multiplicity' tag replaced with
'_atom_site_symmetry_multiplicity'.

Automatic conversion script
Id: cif_correct_tags 1440 2010-10-19 06:21:57Z saulius 
;
_cod_original_cell_volume        3274.4(11)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4077527