Intermolecular β-Hydrogen Abstraction in Ytterbium, Calcium, and Potassium Tris(dimethylsilyl)methyl Compounds
Yan, KaKing; Schoendorff, George; Upton, Brianna M.; Ellern, Arkady; Windus, Theresa L.; Sadow, Aaron D.; Organometallics 32 (2013) 1300–; doi:10.1021/om3010299

data_4080248
_publ_section_title
;
 Intermolecular \b-Hydrogen Abstraction in Ytterbium, Calcium, and
 Potassium Tris(dimethylsilyl)methyl Compounds
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              1300
_journal_paper_doi               10.1021/om3010299
_journal_volume                  32
_journal_year                    2013
_chemical_formula_sum            'C30 H33 B F15 K N4'
_chemical_formula_weight         784.51
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   21.7767(19)
_cell_length_b                   14.3090(12)
_cell_length_c                   22.3300(19)
_cell_measurement_reflns_used    9990
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      25.42
_cell_measurement_theta_min      2.35
_cell_volume                     6958.1(10)
_computing_cell_refinement       'SAINT V7.66A (Bruker AXS, 2009)'
_computing_data_collection       'APEX2 Suite (Bruker AXS, 2009)'
_computing_data_reduction        'SAINT V7.66A (Bruker AXS, 2009)'
_computing_molecular_graphics    'XSHELL (Bruker AXS, 2007)'
_computing_publication_material  'APEX2 Suite (Bruker AXS, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_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  0.0448
_diffrn_reflns_av_sigmaI/netI    0.0251
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            57361
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.09
_diffrn_reflns_theta_min         1.87
_exptl_absorpt_coefficient_mu    0.261
_exptl_absorpt_correction_T_max  0.74
_exptl_absorpt_correction_T_min  0.66
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.498
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3200
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.404
_refine_diff_density_min         -0.256
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     463
_refine_ls_number_reflns         6890
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0544
_refine_ls_R_factor_gt           0.0332
_refine_ls_shift/su_max          0.013
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0352P)^2^+5.3878P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0785
_refine_ls_wR_factor_ref         0.0932
_reflns_number_gt                5227
_reflns_number_total             6890
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om3010299_si_002.cif
_cod_data_source_block           KHB(C6F5)3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               4080248