Synthesis and Structural Characterization of Alkaline-Earth-Metal Bis(amido)silane and Lithium Oxobis(aminolato)silane Complexes
Dongming Yang; Yuqiang Ding; Haishun Wu; Wenjun Zheng; Inorganic Chemistry 50 (2011) 7698–7706; doi:10.1021/ic200748z

data_4325919
_publ_section_title
;
 Synthesis and Structural Characterization of Alkaline-Earth-Metal
 Bis(amido)silane and Lithium Oxobis(aminolato)silane Complexes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7698
_journal_page_last               7706
_journal_paper_doi               10.1021/ic200748z
_journal_volume                  50
_journal_year                    2011
_chemical_formula_sum            'C30 H48 N2 O Si Sr'
_chemical_formula_weight         568.41
_space_group_IT_number           14
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_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                 91.455(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.831(3)
_cell_length_b                   22.700(7)
_cell_length_c                   16.076(5)
_cell_measurement_reflns_used    930
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.996
_cell_measurement_theta_min      2.975
_cell_volume                     3221.6(18)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0416
_diffrn_reflns_av_sigmaI/netI    0.0547
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            14439
_diffrn_reflns_theta_full        26.01
_diffrn_reflns_theta_max         26.01
_diffrn_reflns_theta_min         1.55
_exptl_absorpt_coefficient_mu    1.733
_exptl_absorpt_correction_T_max  0.8738
_exptl_absorpt_correction_T_min  0.7811
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.172
_exptl_crystal_description       block
_exptl_crystal_F_000             1208
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.390
_refine_diff_density_min         -1.000
_refine_diff_density_rms         0.111
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.939
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     316
_refine_ls_number_reflns         6268
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.939
_refine_ls_R_factor_all          0.0825
_refine_ls_R_factor_gt           0.0596
_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^)+(0.1379P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1724
_refine_ls_wR_factor_ref         0.1875
_reflns_number_gt                4363
_reflns_number_total             6268
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic200748z_si_002_3.cif
_cod_data_source_block           a00517b
_cod_original_cell_volume        3221.5(17)
_cod_database_code               4325919