C-Donor lariat ether 'scorpionates'
Arya, Pious; Channa, Asif; Cragg, Peter J.; Prince, Paul D.; Steed, Jonathan W.; New Journal of Chemistry 26 (2002) 440–; doi:10.1039/b108522k

data_7050733
_publ_section_title
;
 C-Donor lariat ether 'scorpionates'
;
_journal_issue                   4
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              440
_journal_paper_doi               10.1039/b108522k
_journal_volume                  26
_journal_year                    2002
_chemical_formula_sum            'C20 H38 N4 O10 Pb'
_chemical_formula_weight         701.73
_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            8
_cell_length_a                   13.894(3)
_cell_length_b                   12.865(3)
_cell_length_c                   30.066(6)
_cell_measurement_temperature    296(2)
_cell_volume                     5374(2)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'Nonius Collect'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    'XSeed (Barbour, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  KappaCCD
_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  0.1616
_diffrn_reflns_av_sigmaI/netI    0.1271
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            21245
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.55
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    6.335
_exptl_absorpt_correction_T_max  0.7424
_exptl_absorpt_correction_T_min  0.1438
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.735
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2784
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.804
_refine_diff_density_min         -0.927
_refine_diff_density_rms         0.168
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.172
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     334
_refine_ls_number_reflns         5248
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.172
_refine_ls_R_factor_all          0.1388
_refine_ls_R_factor_gt           0.0783
_refine_ls_shift/su_max          0.029
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0045P)^2^+26.1687P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1156
_refine_ls_wR_factor_ref         0.1290
_reflns_number_gt                3436
_reflns_number_total             5248
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b108522k.txt
_cod_data_source_block           ac65o
_cod_original_cell_volume        5374.2(19)
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7050733