Chelation and Stereodynamic Equilibria in Neutral Hypercoordinate Organosilicon Complexes of 1-Hydroxy-2-pyridinone
Kraft, Bradley M.; Brennessel, William W.; Organometallics 33 (2014) 158–; doi:10.1021/om400907s

data_4082554
_publ_section_title
;
 Chelation and Stereodynamic Equilibria in Neutral Hypercoordinate
 Organosilicon Complexes of 1-Hydroxy-2-pyridinone
;
_journal_issue                   1
_journal_name_full               Organometallics
_journal_page_first              158
_journal_paper_doi               10.1021/om400907s
_journal_volume                  33
_journal_year                    2014
_chemical_formula_moiety         'C18 H26 N2 O4 Si'
_chemical_formula_sum            'C18 H26 N2 O4 Si'
_chemical_formula_weight         362.50
_chemical_name_common            sjfbk22
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   15.7183(15)
_cell_length_b                   12.8040(12)
_cell_length_c                   18.5749(18)
_cell_measurement_reflns_used    4076
_cell_measurement_temperature    100.0(5)
_cell_measurement_theta_max      28.58
_cell_measurement_theta_min      2.33
_cell_volume                     3738.3(6)
_computing_cell_refinement       'SAINT (Bruker, 2009)'
_computing_data_collection       'APEX2 (Bruker, 2012)'
_computing_data_reduction        'SAINT (Bruker, 2009)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      100.0(5)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX II CCD platform'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1033
_diffrn_reflns_av_unetI/netI     0.0485
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            59553
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        30.510
_diffrn_reflns_theta_max         30.551
_diffrn_reflns_theta_min         2.193
_exptl_absorpt_coefficient_mu    0.150
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6540
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.288
_exptl_crystal_description       block
_exptl_crystal_F_000             1552
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.349
_refine_diff_density_min         -0.291
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     232
_refine_ls_number_reflns         5725
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0776
_refine_ls_R_factor_gt           0.0427
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0407P)^2^+1.6925P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0921
_refine_ls_wR_factor_ref         0.1073
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3897
_reflns_number_total             5725
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            om400907s_si_002.cif
_cod_data_source_block           7
_cod_database_code               4082554
_shelx_estimated_absorpt_t_min   0.973
_shelx_estimated_absorpt_t_max   0.985
_shelxl_version_number           2013-4
_shelx_res_checksum              57585