Geminal Silicon/Zinc Reagent as an Equivalent of Difluoromethylene Bis-carbanion.
Kosobokov, Mikhail D.; Levin, Vitalij V.; Zemtsov, Artem A.; Struchkova, Marina I.; Korlyukov, Alexander A.; Arkhipov, Dmitry E.; Dilman, Alexander D.; Organic letters 16 (2014) 1438–1441; doi:10.1021/ol5002297

data_1513826
_publ_section_title
;
 Geminal Silicon/Zinc Reagent as an Equivalent of Difluoromethylene
 Bis-carbanion.
;
_journal_issue                   5
_journal_name_full               'Organic letters'
_journal_page_first              1438
_journal_page_last               1441
_journal_paper_doi               10.1021/ol5002297
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         'C10 H23 Br F2 O3 Si Zn'
_chemical_formula_sum            'C10 H23 Br F2 O3 Si Zn'
_chemical_formula_weight         402.65
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 101.267(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.1144(5)
_cell_length_b                   26.573(2)
_cell_length_c                   9.7522(7)
_cell_measurement_reflns_used    2623
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      21.81
_cell_measurement_theta_min      2.26
_cell_volume                     1808.1(2)
_computing_cell_refinement       'APEX2 (Bruker, 2005)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'APEX2 (Bruker, 2005)'
_computing_molecular_graphics    'SHELXTL ver. 5.1 (Sheldrick, 1998)'
_computing_publication_material  'SHELXTL ver. 5.1 (Sheldrick, 1998)'
_computing_structure_refinement  'SHELXTL ver. 5.1 (Sheldrick, 1998)'
_computing_structure_solution    'SHELXTL ver. 5.1 (Sheldrick, 1998)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX II CCD area detector'
_diffrn_measurement_method       '\f and \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  0.0690
_diffrn_reflns_av_sigmaI/netI    0.0738
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       37
_diffrn_reflns_limit_k_min       -37
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            19378
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         1.53
_exptl_absorpt_coefficient_mu    3.650
_exptl_absorpt_correction_T_max  0.6685
_exptl_absorpt_correction_T_min  0.5928
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'APEX2 (Bruker, 2005)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.479
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.007
_refine_diff_density_min         -0.521
_refine_diff_density_rms         0.078
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.996
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     168
_refine_ls_number_reflns         5270
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.996
_refine_ls_R_factor_all          0.1230
_refine_ls_R_factor_gt           0.0491
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0532P)^2^+1.3906P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1115
_refine_ls_wR_factor_ref         0.1420
_reflns_number_gt                2690
_reflns_number_total             5270
_reflns_threshold_expression     I>2u(I)
_cod_data_source_file            ol5002297_si_001.cif
_cod_data_source_block           tmscf2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1513826