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_4325918
_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            'C38 H64 Ca N2 O3 Si'
_chemical_formula_weight         665.08
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 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                 113.359(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   22.773(3)
_cell_length_b                   10.1659(12)
_cell_length_c                   19.218(2)
_cell_measurement_reflns_used    4756
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.77
_cell_measurement_theta_min      2.23
_cell_volume                     4084.5(8)
_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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0349
_diffrn_reflns_av_sigmaI/netI    0.0686
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            12635
_diffrn_reflns_theta_full        26.01
_diffrn_reflns_theta_max         26.01
_diffrn_reflns_theta_min         2.23
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.217
_exptl_absorpt_correction_T_max  0.9682
_exptl_absorpt_correction_T_min  0.9478
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.082
_exptl_crystal_density_meas      0
_exptl_crystal_description       prism
_exptl_crystal_F_000             1456
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.242
_refine_diff_density_min         -0.391
_refine_diff_density_rms         0.090
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.01(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     406
_refine_ls_number_reflns         7399
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0969
_refine_ls_R_factor_gt           0.0556
_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^)+(0.0861P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1338
_refine_ls_wR_factor_ref         0.1601
_reflns_number_gt                5177
_reflns_number_total             7399
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic200748z_si_002_2.cif
_cod_data_source_block           mo_00713b_0m
_cod_original_cell_volume        4084.4(8)
_cod_database_code               4325918