Hexacoordinate Complexes of Silacyclobutane: Spontaneous Ring Opening and Rearrangement
Gostevskii, Boris; Kalikhman, Inna; Tessier, Claire A.; Panzner, Matthew J.; Youngs, Wiley J.; Kost, Daniel; Organometallics 24 (2005) 5786–; doi:10.1021/om0505559

data_4076075
_publ_section_title
;
 Hexacoordinate Complexes of Silacyclobutane:&#x00A0; Spontaneous Ring
 Opening and Rearrangement
;
_journal_issue                   24
_journal_name_full               Organometallics
_journal_page_first              5786
_journal_paper_doi               10.1021/om0505559
_journal_volume                  24
_journal_year                    2005
_chemical_formula_moiety         'C11 H20 N4 O2 Si'
_chemical_formula_sum            'C11 H20 N4 O2 Si'
_chemical_formula_weight         268.40
_chemical_name_common            3a
_chemical_name_systematic
; 
 Bis[N(ethylideneimino)acetimidato-N,O]silacyclobutane 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 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                 109.739(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.901(3)
_cell_length_b                   7.3668(12)
_cell_length_c                   12.472(2)
_cell_measurement_reflns_used    1172
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.43
_cell_measurement_theta_min      2.72
_cell_volume                     1375.1(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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      100(2)
_diffrn_measured_fraction_theta_full 0.964
_diffrn_measured_fraction_theta_max 0.964
_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  0.0386
_diffrn_reflns_av_sigmaI/netI    0.0420
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            5959
_diffrn_reflns_theta_full        28.32
_diffrn_reflns_theta_max         28.32
_diffrn_reflns_theta_min         2.72
_exptl_absorpt_coefficient_mu    0.172
_exptl_absorpt_correction_T_max  0.9830
_exptl_absorpt_correction_T_min  0.9566
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.434
_refine_diff_density_min         -0.241
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.120
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     85
_refine_ls_number_reflns         1655
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.120
_refine_ls_R_factor_all          0.0602
_refine_ls_R_factor_gt           0.0497
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0449P)^2^+1.4064P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1096
_refine_ls_wR_factor_ref         0.1144
_reflns_number_gt                1418
_reflns_number_total             1655
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om0505559si20050901_075556.cif
_cod_data_source_block           mp
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'C2/c  '
_cod_database_code               4076075