Potential Protecting Group Strategy for Disila Analogues of Vinyllithiums: Synthesis and Reactivity of a 2,4,6-Trimethoxyphenyl-Substituted Disilene
Meltzer, Antje; Majumdar, Moumita; White, Andrew J. P.; Huch, Volker; Scheschkewitz, David; Organometallics 32 (2013) 6844–; doi:10.1021/om400545w

data_4081795
_publ_section_title
;
 Potential Protecting Group Strategy for Disila Analogues of
 Vinyllithiums: Synthesis and Reactivity of a
 2,4,6-Trimethoxyphenyl-Substituted Disilene
;
_journal_issue                   22
_journal_name_full               Organometallics
_journal_page_first              6844
_journal_paper_doi               10.1021/om400545w
_journal_volume                  32
_journal_year                    2013
_chemical_formula_sum            'C54 H83 N O3 Si2'
_chemical_formula_weight         850.39
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.647(2)
_cell_angle_beta                 98.869(2)
_cell_angle_gamma                111.178(2)
_cell_formula_units_Z            2
_cell_length_a                   9.4796(5)
_cell_length_b                   11.8037(6)
_cell_length_c                   25.1824(13)
_cell_measurement_reflns_used    9866
_cell_measurement_temperature    132(2)
_cell_measurement_theta_max      31.44
_cell_measurement_theta_min      2.34
_cell_volume                     2589.2(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_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      132(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0309
_diffrn_reflns_av_sigmaI/netI    0.0318
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            64593
_diffrn_reflns_theta_full        31.51
_diffrn_reflns_theta_max         31.51
_diffrn_reflns_theta_min         1.64
_exptl_absorpt_coefficient_mu    0.109
_exptl_absorpt_correction_T_max  0.9588
_exptl_absorpt_correction_T_min  0.9247
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, BrukerAXS, 2008'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.091
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             932
_exptl_crystal_size_max          0.73
_exptl_crystal_size_mid          0.51
_exptl_crystal_size_min          0.39
_refine_diff_density_max         0.518
_refine_diff_density_min         -0.406
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     851
_refine_ls_number_reflns         17112
_refine_ls_number_restraints     158
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0542
_refine_ls_R_factor_gt           0.0413
_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^)+(0.0522P)^2^+0.8298P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1029
_refine_ls_wR_factor_ref         0.1112
_reflns_number_gt                14029
_reflns_number_total             17112
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400545w_si_010.cif
_cod_data_source_block           5
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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      P-1
_cod_database_code               4081795