Synthesis and structural characterization of the first completely alkyl-substituted Ga‒Sb Lewis acid‒base adducts †
Schulz, Stephan; Nieger, Martin; Journal of the Chemical Society, Dalton Transactions  (2000) 639–; doi:10.1039/a908969a

data_7009155
_publ_section_title
;
 Synthesis and structural characterization of the first completely
 alkyl-substituted Ga--Sb Lewis acid--base adducts&#x200A;&#x2020;
;
_journal_issue                   5
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              639
_journal_paper_doi               10.1039/a908969a
_journal_year                    2000
_chemical_formula_sum            'C21 H48 Ga Sb'
_chemical_formula_weight         492.06
_chemical_name_systematic
; 
 Tri(tert.butyl)gallium-tri(isopropyl)antimon-adduct
;
_space_group_IT_number           14
_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     Patterson
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.750(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.6128(2)
_cell_length_b                   9.0089(2)
_cell_length_c                   20.0307(2)
_cell_measurement_reflns_used    32772
_cell_measurement_temperature    123(2)
_cell_volume                     2455.35(7)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       Collect
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    XP
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.955
_diffrn_measured_fraction_theta_max 0.955
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'rotation in phi and omega, 1 deg.'
_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  0.0387
_diffrn_reflns_av_sigmaI/netI    0.0222
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            31295
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         2.49
_exptl_absorpt_coefficient_mu    2.198
_exptl_absorpt_correction_T_max  '0.4383 (0.4062, theor.)'
_exptl_absorpt_correction_T_min  '0.3988 (0.3522, theor.)'
_exptl_absorpt_correction_type   'empirical from multiple refl'
_exptl_absorpt_process_details   'MULABS (cf. Blessing, 1995) in PLATON98'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.331
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             1024
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.55
_exptl_crystal_size_min          0.50
_refine_diff_density_max         0.446
_refine_diff_density_min         -0.704
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         5802
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.082
_refine_ls_R_factor_all          0.0214
_refine_ls_R_factor_gt           0.0198
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0206P)^2^+1.4385P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0482
_refine_ls_wR_factor_ref         0.0488
_reflns_number_gt                5523
_reflns_number_total             5802
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            a908969a.txt
_cod_data_source_block           schulz20_compound_7
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' 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 
;
_cod_original_sg_symbol_H-M      'P2(1)/c (No.14)'
_cod_database_code               7009155