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_4311999
_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_moiety         'C62 H80 Pb2'
_chemical_formula_sum            'C62 H80 Pb2'
_chemical_formula_weight         1239.64
_chemical_name_common            '[Ar'Pb(CH3)]2'
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.668(2)
_cell_length_b                   17.285(2)
_cell_length_c                   20.011(3)
_cell_measurement_reflns_used    912
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.116
_cell_measurement_theta_min      2.357
_cell_volume                     5419.4(12)
_computing_cell_refinement       'Bruker SAINT 6.33B (Bruker 2002)'
_computing_data_collection       'Bruker SMART 5.054 (Bruker 2002)'
_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      293(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.1018
_diffrn_reflns_av_sigmaI/netI    0.0527
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            49053
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.25
_diffrn_reflns_theta_min         2.03
_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    6.241
_exptl_absorpt_correction_T_max  0.624
_exptl_absorpt_correction_T_min  0.440
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2.04 (Bruker 2002)'
_exptl_crystal_colour            green-pink
_exptl_crystal_density_diffrn    1.519
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2464
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.09
_refine_diff_density_max         1.858
_refine_diff_density_min         -1.395
_refine_diff_density_rms         0.153
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     298
_refine_ls_number_reflns         4910
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0850
_refine_ls_R_factor_gt           0.0321
_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^)+(0.0346P)^2^+25.1593P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0736
_refine_ls_wR_factor_ref         0.0987
_reflns_number_gt                2550
_reflns_number_total             4910
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic049174ysi20040624_074118_3.cif
_cod_data_source_block           adp103
_cod_database_code               4311999