Syntheses and molecular structures of some saturated N-heterocyclic plumbylenes
Charmant, Jonathan P. H.; Haddow, Mairi F.; Hahn, F. Ekkehardt; Heitmann, Dennis; Fröhlich, Roland; Mansell, Stephen M.; Russell, Christopher A.; Wass, Duncan F.; Dalton Transactions  (2008) 6055–6059; doi:10.1039/b808717b

data_7004572
_publ_section_title
;
 Syntheses and molecular structures of some saturated N-heterocyclic
 plumbylenes
;
_journal_issue                   43
_journal_name_full               'Dalton Transactions'
_journal_page_first              6055
_journal_page_last               6059
_journal_paper_doi               10.1039/b808717b
_journal_year                    2008
_chemical_formula_sum            'C40 H52 N4 Pb2'
_chemical_formula_weight         1003.24
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                66.2800(10)
_cell_angle_beta                 74.3180(10)
_cell_angle_gamma                68.1540(10)
_cell_formula_units_Z            1
_cell_length_a                   8.7974(5)
_cell_length_b                   10.0046(6)
_cell_length_c                   11.9931(7)
_cell_measurement_reflns_used    900
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      22.5
_cell_measurement_theta_min      1
_cell_volume                     887.91(9)
_computing_cell_refinement       'SAINT (Bruker AXS, 2000)'
_computing_data_collection       'SMART (Bruker AXS, 2000)'
_computing_data_reduction        'SAINT,SADABS (Bruker AXS, 2000)'
_computing_molecular_graphics
;
ORTEP3,L.J. Farrugia, J. Appl. Cryst. (1997) 30, 565
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 80
_diffrn_measured_fraction_theta_full 0.927
_diffrn_measured_fraction_theta_max 0.927
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'Omega and Phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0170
_diffrn_reflns_av_sigmaI/netI    0.0265
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            10817
_diffrn_reflns_theta_full        31.59
_diffrn_reflns_theta_max         31.59
_diffrn_reflns_theta_min         1.87
_exptl_absorpt_coefficient_mu    9.502
_exptl_absorpt_correction_T_max  0.7024
_exptl_absorpt_correction_T_min  0.3298
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Corrections were done with the SADABS program, utilizing the none merged
raw data obtained from the integration process. Integration and final cell
refinement were done with SAINT.

SADABS reports ratio of Tmin/Tmax = 0.506270

;
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.876
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             484
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.04
_refine_diff_density_max         1.528
_refine_diff_density_min         -1.336
_refine_diff_density_rms         0.127
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     214
_refine_ls_number_reflns         5519
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0234
_refine_ls_R_factor_gt           0.0201
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0266P)^2^+0.7869P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0490
_refine_ls_wR_factor_ref         0.0502
_reflns_number_gt                5123
_reflns_number_total             5519
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b808717b.txt
_cod_data_source_block           plumbylene-2
_cod_database_code               7004572