Lead-Chromium Carbonyl Complexes Incorporated with Group 8 Metals: Synthesis, Reactivity, and Theoretical Calculations
Minghuey Shieh; Yen-Yi Chu; Miao-Hsing Hsu; Wei-Ming Ke; Chien-Nan Lin; Inorganic Chemistry 50 (2011) 565–575; doi:10.1021/ic101560u

data_4324211
_publ_section_title
;
 Lead-Chromium Carbonyl Complexes Incorporated with Group 8 Metals:
 Synthesis, Reactivity, and Theoretical Calculations
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              565
_journal_page_last               575
_journal_paper_doi               10.1021/ic101560u
_journal_volume                  50
_journal_year                    2011
_chemical_formula_moiety         'C34 H40 Br2 Cr4 N2 O18 Pb2'
_chemical_formula_sum            'C34 H40 Br2 Cr4 N2 O18 Pb2'
_chemical_formula_weight         1546.89
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 101.8046(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.5681(2)
_cell_length_b                   24.6016(6)
_cell_length_c                   11.3668(3)
_cell_measurement_reflns_used    42023
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      3.395
_cell_volume                     2619.05(11)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 19'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_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  0.0928
_diffrn_reflns_av_sigmaI/netI    0.0860
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            16978
_diffrn_reflns_theta_full        27.71
_diffrn_reflns_theta_max         27.71
_diffrn_reflns_theta_min         3.53
_exptl_absorpt_coefficient_mu    8.799
_exptl_absorpt_correction_T_max  0.4128
_exptl_absorpt_correction_T_min  0.2964
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 ?
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    2.007
_exptl_crystal_description       prism
_exptl_crystal_F_000             1504
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.03
_refine_diff_density_max         3.478
_refine_diff_density_min         -2.535
_refine_diff_density_rms         0.241
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    fixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         5987
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0950
_refine_ls_R_factor_gt           0.0709
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0762P)^2^+33.1966P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1720
_refine_ls_wR_factor_ref         0.1838
_reflns_number_gt                4481
_reflns_number_total             5987
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic101560u_si_002_2.cif
_cod_data_source_block           4
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4324211