Preparation of aminomethyl functionalised silanes via an α-lithiated amine: From their synthesis, stability and crystal structures to stereochemical issues.
Gessner, Viktoria H.; Strohmann, Carsten; Dalton transactions (Cambridge, England : 2003) 41 (2012) 3452–3460; doi:10.1039/c2dt12163h

data_7018580
_publ_section_title
;
 Preparation of aminomethyl functionalised silanes via an \a-lithiated
 amine: From their synthesis, stability and crystal structures to
 stereochemical issues.
;
_journal_issue                   12
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3452
_journal_page_last               3460
_journal_paper_doi               10.1039/c2dt12163h
_journal_volume                  41
_journal_year                    2012
_chemical_absolute_configuration rmad
_chemical_formula_sum            'C39 H52 Br2 N2 O Si2 Zn'
_chemical_formula_weight         846.2
_chemical_name_systematic
;
?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2009-10-06T13:04:18-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.2947(4)
_cell_length_b                   16.4427(5)
_cell_length_c                   19.7658(6)
_cell_measurement_temperature    173(2)
_cell_volume                     3995.8(2)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.37 (release 24-10-2008 CrysAlis171 .NET)
(compiled Oct 24 2008,09:44:38)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.32.37 (release 24-10-2008 CrysAlis171 .NET)
(compiled Oct 24 2008,09:44:38)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.37 (release 24-10-2008 CrysAlis171 .NET)
(compiled Oct 24 2008,09:44:38)
;
_computing_molecular_graphics    'Ortep-3 (Farrugia, 1997)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0456
_diffrn_reflns_av_unetI/netI     0.056
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            33648
_diffrn_reflns_theta_full        25
_diffrn_reflns_theta_max         25
_diffrn_reflns_theta_min         2.06
_exptl_absorpt_coefficient_mu    2.706
_exptl_absorpt_correction_T_max  0.9914
_exptl_absorpt_correction_T_min  0.9125
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.37 (release 24-10-2008 CrysAlis171 .NET)
(compiled Oct 24 2008,09:44:38)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_density_diffrn    1.407
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1744
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.616
_refine_diff_density_min         -0.399
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.003(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     430
_refine_ls_number_reflns         7038
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0351
_refine_ls_R_factor_gt           0.0255
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0115P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0392
_refine_ls_wR_factor_ref         0.0397
_reflns_number_gt                5690
_reflns_number_total             7038
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt12163h.txt
_cod_data_source_block           0188
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7018580