A bidentate Lewis acid with a telluronium ion as an anion-binding site.
Zhao, Haiyan; Gabbaï, François P; Nature chemistry 2 (2010) 984–990; doi:10.1038/nchem.838

data_1508132
_publ_section_title
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 A bidentate Lewis acid with a telluronium ion as an anion-binding site.
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_journal_issue                   11
_journal_name_full               'Nature chemistry'
_journal_page_first              984
_journal_page_last               990
_journal_paper_doi               10.1038/nchem.838
_journal_volume                  2
_journal_year                    2010
_chemical_formula_moiety         'C34 H33 B Te'
_chemical_formula_sum            'C34 H33 B Te'
_chemical_formula_weight         580.01
_chemical_melting_point          ?
_chemical_name_common            none
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 123.819(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.3549(18)
_cell_length_b                   12.2755(14)
_cell_length_c                   17.3029(14)
_cell_measurement_reflns_used    9910
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      56.625
_cell_measurement_theta_min      5.211
_cell_volume                     2709.6(5)
_computing_cell_refinement       'Bruker APEX-II'
_computing_data_collection       'Bruker APEX-II'
_computing_data_reduction        'Bruker APEX-II'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'BRUKE APEX-II CCD'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0499
_diffrn_reflns_av_sigmaI/netI    0.0258
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            25919
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.30
_exptl_absorpt_coefficient_mu    1.119
_exptl_absorpt_correction_T_max  0.9359
_exptl_absorpt_correction_T_min  0.8774
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.422
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1176
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.979
_refine_diff_density_min         -0.387
_refine_diff_density_rms         0.069
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     325
_refine_ls_number_reflns         4985
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0281
_refine_ls_R_factor_gt           0.0257
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0403P)^2^+1.5250P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0693
_refine_ls_wR_factor_ref         0.0703
_reflns_number_gt                4559
_reflns_number_total             4985
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            nchem.838-s2.cif
_cod_data_source_block           1
_cod_depositor_comments
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The following automatic conversions were performed:

'_chemical_melting_point' value 'none' was changed to '?' - the value
is undefined or not given.

'_symmetry_cell_setting' value
'Monoclinic' changed to 'monoclinic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1508132
_plat094_alert_2_c
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PROBLEM: Ratio of Maximum / Minimum Residual Density ....       2.53
RESPONSE: This can be attributed to the slight disorder.
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