Halostibines SbMeX2and SbMe2X: Lewis Acids or Lewis Bases?
Benjamin, Sophie L.; Levason, William; Reid, Gillian; Warr, Robert P.; Organometallics 31 (2012) 1025–; doi:10.1021/om2010996

data_4068110
_publ_section_title
;
 Halostibines SbMeX2and SbMe2X: Lewis Acids or Lewis Bases?
;
_journal_issue                   3
_journal_name_full               Organometallics
_journal_page_first              1025
_journal_paper_doi               10.1021/om2010996
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C7 H21 Br2 O2 P2 Sb'
_chemical_formula_structural     '(c3 H9 O P)2 ((C H3) Br2 Sb)'
_chemical_formula_sum            'C7 H21 Br2 O2 P2 Sb'
_chemical_formula_weight         480.75
_chemical_name_systematic
; 
 Dibromo-methylbis(trimethylphosphine oxide-O)antimony(III) 
;
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2011-03-10
_audit_creation_method           'SHELXL-97 + hand edit'
_cell_angle_alpha                90.00
_cell_angle_beta                 117.145(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   20.039(3)
_cell_length_b                   9.235(2)
_cell_length_c                   19.831(4)
_cell_measurement_reflns_used    22142
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     3265.7(11)
_computing_cell_refinement       'DENZO (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction        'DENZO (Otwinowski & Minor, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'DIRDIF-99 (Beurskens, 1999)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type
'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0564
_diffrn_reflns_av_sigmaI/netI    0.0443
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            37437
_diffrn_reflns_theta_full        27.53
_diffrn_reflns_theta_max         27.53
_diffrn_reflns_theta_min         3.00
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    6.761
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.5492
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'G.M. Sheldrick, (2007). SADABS. Version 2007/2. Bruker AXS Inc.'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.956
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             1840
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.986
_refine_diff_density_min         -1.222
_refine_diff_density_rms         0.192
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.198
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         7450
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.198
_refine_ls_R_factor_all          0.0593
_refine_ls_R_factor_gt           0.0492
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0154P)^2^+33.7052P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1008
_refine_ls_wR_factor_ref         0.1041
_reflns_number_gt                6406
_reflns_number_total             7450
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om2010996_si_002.cif
_cod_data_source_block           10slbrpw07x
_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        3265.8(11)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4068110