Terphenyl Ligand Stabilized Lead(II) Derivatives: Steric Effects and Lead-Lead Bonding in Diplumbenes
Shirley Hino; Marilyn Olmstead; Andrew D. Phillips; Robert J. Wright; Philip P. Power; Inorganic Chemistry 43 (2004) 7346–7352; doi:10.1021/ic049174y

data_4311997
_publ_section_title
;
 Terphenyl Ligand Stabilized Lead(II) Derivatives: Steric Effects and
 Lead-Lead Bonding in Diplumbenes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7346
_journal_page_last               7352
_journal_paper_doi               10.1021/ic049174y
_journal_volume                  43
_journal_year                    2004
_chemical_formula_sum            'C60 H74 Br2 Pb2'
_chemical_formula_weight         1369.40
_chemical_name_common            (Ar'PbBr)2
_chemical_name_systematic
; 
 ? 
;
_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                 97.539(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.3164(18)
_cell_length_b                   14.1792(18)
_cell_length_c                   14.6144(18)
_cell_measurement_reflns_used    932
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      31.289
_cell_measurement_theta_min      2.4185
_cell_volume                     2735.6(6)
_computing_cell_refinement       'Bruker SAINT 6.33B (Bruker 2002)'
_computing_data_collection       'Bruker SMART 5.054 (Bruker 2001)'
_computing_data_reduction        'Bruker SAINT 6.33B (Bruker 2002)'
_computing_molecular_graphics    'SHELXTL 5, XP (Sheldrick, 1994)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      90(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker SMART 1000'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0300
_diffrn_reflns_av_sigmaI/netI    0.0216
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            26755
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.95
_diffrn_standards_decay_%        <0.1
_diffrn_standards_interval_time
;
frames measured at beginning and end of data collection 
;
_diffrn_standards_number         '50 frames remeasured'
_exptl_absorpt_coefficient_mu    7.643
_exptl_absorpt_correction_T_max  0.4869
_exptl_absorpt_correction_T_min  0.4607
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2.04 (Sheldrick 2001)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.662
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1336
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         1.248
_refine_diff_density_min         -0.530
_refine_diff_density_rms         0.100
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         5340
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0254
_refine_ls_R_factor_gt           0.0209
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0274P)^2^+5.8623P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0538
_refine_ls_wR_factor_ref         0.0560
_reflns_number_gt                4780
_reflns_number_total             5340
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic049174ysi20040624_074118_1.cif
_cod_data_source_block           adp106
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4311997