Effect of Sterically Hindered Ligands on the Solid-State Structures of Organosilanediols Containing Si-N Bonds
Vadapalli Chandrasekhar; Selvarajan Nagendran; Ramamoorthy Boomishankar; Raymond J. Butcher; Inorganic Chemistry 40 (2001) 940–945; doi:10.1021/ic000487c

data_4319271
_publ_section_title
;
 Effect of Sterically Hindered Ligands on the Solid-State Structures of
 Organosilanediols Containing Si-N Bonds
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              940
_journal_page_last               945
_journal_paper_doi               10.1021/ic000487c
_journal_volume                  40
_journal_year                    2001
_chemical_formula_sum            'C16 H31 N O2 Si2'
_chemical_formula_weight         325.60
_space_group_IT_number           13
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yc'
_symmetry_space_group_name_H-M   'P 1 2/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                 92.445(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            24
_cell_length_a                   27.744(5)
_cell_length_b                   12.806(3)
_cell_length_c                   34.244(8)
_cell_measurement_reflns_used    46
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      9.97
_cell_measurement_theta_min      2.40
_cell_volume                     12155(5)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_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 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\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  0.0524
_diffrn_reflns_av_sigmaI/netI    0.1199
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            21888
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.10
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.179
_exptl_absorpt_correction_T_max  0.8908
_exptl_absorpt_correction_T_min  0.8395
_exptl_absorpt_correction_type   integration
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.068
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             4272
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.99
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.435
_refine_diff_density_min         -0.443
_refine_diff_density_rms         0.062
_refine_ls_extinction_coef       0.00093(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.991
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1370
_refine_ls_number_reflns         21409
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.991
_refine_ls_R_factor_all          0.1888
_refine_ls_R_factor_gt           0.0866
_refine_ls_shift/su_max          1.018
_refine_ls_shift/su_mean         0.015
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1167P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1953
_refine_ls_wR_factor_ref         0.2486
_reflns_number_gt                9616
_reflns_number_total             21409
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic000487c_2.cif
_cod_data_source_block           vc17a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_cell_volume        12155(4)
_cod_database_code               4319271