Low-Coordinate Germylene and Stannylene Heterocycles featuring Sterically Tunable Bis(amido)silyl Ligands
S. M. Ibrahim Al-Rafia; Paul A. Lummis; Michael J. Ferguson; Robert McDonald; Eric Rivard; Inorganic Chemistry 49 (2010) 9709–9717; doi:10.1021/ic101485a

data_4316855
_publ_contact_author_address
;
Department of Chemistry
University of Alberta
Edmonton
AB T6G 2G2
CANADA
;
_publ_contact_author_email       ERIVARD@UALBERTA.CA
_publ_contact_author_name        'E. Rivard'
_publ_section_title
;
 Low-Coordinate Germylene and Stannylene Heterocycles featuring Sterically
 Tunable Bis(amido)silyl Ligands
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              9709
_journal_page_last               9717
_journal_paper_doi               10.1021/ic101485a
_journal_volume                  49
_journal_year                    2010
_chemical_formula_moiety         'C42 H44 Ge N2 Si3'
_chemical_formula_sum            'C42 H44 Ge N2 Si3'
_chemical_formula_weight         733.65
_chemical_name_common            'Compound 5'
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 91.3020(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.6077(9)
_cell_length_b                   25.628(3)
_cell_length_c                   17.1827(18)
_cell_measurement_reflns_used    9387
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.61
_cell_measurement_theta_min      2.37
_cell_volume                     3789.5(7)
_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, 2008)'
_computing_structure_solution    'SIR-97 (Altomare et al, 1999)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_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  0.0301
_diffrn_reflns_av_sigmaI/netI    0.0260
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       -33
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            33203
_diffrn_reflns_theta_full        27.63
_diffrn_reflns_theta_max         27.63
_diffrn_reflns_theta_min         1.43
_exptl_absorpt_coefficient_mu    0.935
_exptl_absorpt_correction_T_max  0.9172
_exptl_absorpt_correction_T_min  0.6356
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.286
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1536
_exptl_crystal_size_max          0.53
_exptl_crystal_size_mid          0.39
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.577
_refine_diff_density_min         -0.561
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     433
_refine_ls_number_reflns         8784
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0440
_refine_ls_R_factor_gt           0.0331
_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^)+(0.0508P)^2^+1.7887P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0911
_refine_ls_wR_factor_ref         0.0983
_reflns_number_gt                7290
_reflns_number_total             8784
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic101485a_si_001_06.cif
_cod_data_source_block           5
_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_sg_symbol_H-M      'P 21/n'
_cod_database_code               4316855