Synthesis and Characterization of Bis(2,4,6-tris(trifluoromethyl)phenyl) Derivatives of Arsenic and Antimony: X-ray Crystal Structures of As(RF)2Cl, Sb(RF)2Cl, and Sb(RF)2OSO2CF3
Neil Burford; Charles L. B. Macdonald; Daren J. LeBlanc; T. Stanley Cameron; Organometallics 19 (2000) 152–155; doi:10.1021/om990768w

data_4063195
_publ_section_title
;
 Synthesis and Characterization of
 Bis(2,4,6-tris(trifluoromethyl)phenyl) Derivatives of Arsenic and
 Antimony: X-ray Crystal Structures of As(RF)2Cl, Sb(RF)2Cl, and
 Sb(RF)2OSO2CF3
;
_journal_name_full               Organometallics
_journal_page_first              152
_journal_page_last               155
_journal_paper_doi               10.1021/om990768w
_journal_volume                  19
_journal_year                    2000
_chemical_formula_sum            'C18 H4 As Cl F18'
_chemical_formula_weight         672.58
_chemical_melting_point          99.0(10)
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.6646(2)
_cell_length_b                   9.69650(10)
_cell_length_c                   25.4076(6)
_cell_measurement_reflns_used    16157
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      26.37
_cell_measurement_theta_min      2.48
_cell_volume                     2134.65(7)
_computing_cell_refinement       'DENZO-SMN (Nonius, 1997)'
_computing_data_collection       'KappaCCD Server software (Nonius, 1997)'
_computing_data_reduction        'DENZO-SMN (Nonius, 1997)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1994)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      130(2)
_diffrn_detector_area_resol_mean 9.2
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '1\% rotations on \f'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube (50 kV, 23 mA)'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0740
_diffrn_reflns_av_sigmaI/netI    0.0413
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            16157
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.48
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    1.880
_exptl_absorpt_correction_T_max  0.766
_exptl_absorpt_correction_T_min  0.602
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Nonius, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.093
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1296
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.451
_refine_diff_density_min         -0.463
_refine_diff_density_rms         0.070
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.002(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     402
_refine_ls_number_reflns         4353
_refine_ls_number_restraints     36
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.0403
_refine_ls_R_factor_gt           0.0334
_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^)+(0.0271P)^2^+2.7658P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0775
_refine_ls_wR_factor_ref         0.0822
_reflns_number_gt                3925
_reflns_number_total             4353
_reflns_threshold_expression     I>2sigma(I)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '98-100' was changed to '99.0(10)' -
the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
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_cod_database_code               4063195