EPR spectroscopic characterization of persistent germyl-substituted Pb(III)- and Sn(III)-radicals.
Kurzbach, Dennis; Yao, Shenglai; Hinderberger, Dariush; Klinkhammer, Karl W.; Dalton transactions (Cambridge, England : 2003) 39 (2010) 6449–6459; doi:10.1039/c001144d

data_7025479
_publ_section_title
;
 EPR spectroscopic characterization of persistent germyl-substituted
 Pb(III)- and Sn(III)-radicals.
;
_journal_issue                   28
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6449
_journal_page_last               6459
_journal_paper_doi               10.1039/c001144d
_journal_volume                  39
_journal_year                    2010
_chemical_formula_sum            'C18 H54 Ge2 Si6 Sn'
_chemical_formula_weight         703.02
_chemical_name_common            Tetrakis(tris(trimethylsilyl)germyl)distannene
_chemical_name_systematic
;
Tetrakis[tris(trimethylsilyl)germyl]distannene
;
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-I 2ya'
_symmetry_space_group_name_H-M   'I 1 2/a 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                 106.60(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   23.409(6)
_cell_length_b                   13.216(4)
_cell_length_c                   23.711(7)
_cell_measurement_temperature    293(2)
_cell_volume                     7030(4)
_computing_cell_refinement       XSCANS
_computing_data_collection       XSCANS
_computing_data_reduction        XSCANS
_computing_molecular_graphics    SHELXTL-Plus
_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  'Siemens P4 4-circle-diffractometer'
_diffrn_measurement_method       'Profile fitted 2\q/\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  0.0769
_diffrn_reflns_av_sigmaI/netI    0.1016
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            13666
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.16
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    2.614
_exptl_absorpt_correction_T_max  .923
_exptl_absorpt_correction_T_min  .789
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.329
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelett
_exptl_crystal_F_000             2880
_exptl_crystal_size_max          0.62
_exptl_crystal_size_mid          0.59
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.721
_refine_diff_density_min         -0.732
_refine_diff_density_rms         0.123
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.861
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     348
_refine_ls_number_reflns         6909
_refine_ls_number_restraints     32
_refine_ls_restrained_S_all      0.860
_refine_ls_R_factor_all          0.0669
_refine_ls_R_factor_gt           0.0360
_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^)+(0.0270P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0735
_refine_ls_wR_factor_ref         0.0817
_reflns_number_gt                4687
_reflns_number_total             6909
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c001144d.txt
_cod_data_source_block           sngesi3
_cod_original_cell_volume        7030(3)
_cod_database_code               7025479