Synthesis and structural characterization of two-coordinate low-valent 14-group metal complexes bearing bulky bis(amido)silane ligands.
Yang, Dongming; Guo, Jianmei; Wu, Haishun; Ding, Yuqiang; Zheng, Wenjun; Dalton transactions (Cambridge, England : 2003) 41 (2012) 2187–2194; doi:10.1039/c1dt11774b

data_7017966
_publ_section_title
;
 Synthesis and structural characterization of two-coordinate low-valent
 14-group metal complexes bearing bulky bis(amido)silane ligands.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2187
_journal_page_last               2194
_journal_paper_doi               10.1039/c1dt11774b
_journal_volume                  41
_journal_year                    2012
_chemical_formula_sum            'C52 H80 N4 Pb2 Si2'
_chemical_formula_weight         1231.76
_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                 116.420(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.444(4)
_cell_length_b                   18.724(6)
_cell_length_c                   12.638(4)
_cell_measurement_reflns_used    926
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.750
_cell_measurement_theta_min      3.270
_cell_volume                     2637.1(15)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0350
_diffrn_reflns_av_sigmaI/netI    0.0413
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            11715
_diffrn_reflns_theta_full        26.01
_diffrn_reflns_theta_max         26.01
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    6.457
_exptl_absorpt_correction_T_max  0.4442
_exptl_absorpt_correction_T_min  0.3583
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.551
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1224
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.168
_refine_diff_density_min         -0.775
_refine_diff_density_rms         0.105
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.944
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         5195
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.944
_refine_ls_R_factor_all          0.0403
_refine_ls_R_factor_gt           0.0259
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0303P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0562
_refine_ls_wR_factor_ref         0.0593
_reflns_number_gt                4027
_reflns_number_total             5195
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1dt11774b.txt
_cod_data_source_block           5a
_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_cell_volume        2637.3(16)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7017966