Room-Temperature Insertion of Elemental Tellurium into the Csp3−Br and −I Bonds of α-Bromo- and α-Iodopinacolone
Chauhan, Ashok K. S.; Singh, Puspendra; Kumar, Arun; Srivastava, Ramesh C.; Butcher, Ray J.; Duthie, Andrew; Organometallics 26 (2007) 1955–; doi:10.1021/om061144a

data_4072935
_publ_section_title
;
 Room-Temperature Insertion of Elemental Tellurium into the Csp3&#x2212;Br
 and &#x2212;I Bonds of \a-Bromo- and \a-Iodopinacolone
;
_journal_issue                   8
_journal_name_full               Organometallics
_journal_page_first              1955
_journal_paper_doi               10.1021/om061144a
_journal_volume                  26
_journal_year                    2007
_chemical_formula_moiety         'C16 H18 Br2 O Te'
_chemical_formula_sum            'C16 H18 Br2 O Te'
_chemical_formula_weight         513.72
_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                 93.574(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.5150(12)
_cell_length_b                   14.279(3)
_cell_length_c                   19.049(4)
_cell_measurement_reflns_used    5141
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      28.25
_cell_measurement_theta_min      2.57
_cell_volume                     1768.6(6)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_computing_molecular_graphics    'DIAMOND (Bergerhoff et al., 1996)'
_computing_publication_material  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      93(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\w 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  0.0279
_diffrn_reflns_av_sigmaI/netI    0.0278
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            12802
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.78
_exptl_absorpt_coefficient_mu    6.194
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.639
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2000)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.929
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             976
_exptl_crystal_size_max          0.95
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.761
_refine_diff_density_min         -2.348
_refine_diff_density_rms         0.127
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.001
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     270
_refine_ls_number_reflns         4056
_refine_ls_number_restraints     31
_refine_ls_restrained_S_all      0.999
_refine_ls_R_factor_all          0.0380
_refine_ls_R_factor_gt           0.0330
_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^)+(0.0243P)^2^+10.5791P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0722
_refine_ls_wR_factor_ref         0.0742
_reflns_number_gt                3684
_reflns_number_total             4056
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om061144asi20070213_024116.cif
_cod_data_source_block           Compound_2b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_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.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4072935