Unusual transmetallation-induced formation of a C2-symmetric tetrapallada-macrocycle.
Annibale, Vincent T.; Lund, Liisa M.; Song, Datong; Chemical communications (Cambridge, England) 46 (2010) 8261–8263; doi:10.1039/c0cc03314f

data_7112964
_publ_section_title
;
 Unusual transmetallation-induced formation of a C2-symmetric
 tetrapallada-macrocycle.
;
_journal_issue                   43
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              8261
_journal_page_last               8263
_journal_paper_doi               10.1039/c0cc03314f
_journal_volume                  46
_journal_year                    2010
_chemical_formula_sum            'C46 H44 Cl4 N4 Pd4'
_chemical_formula_weight         1220.25
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 124.5226(11)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.5383(8)
_cell_length_b                   13.6270(3)
_cell_length_c                   18.8184(6)
_cell_measurement_reflns_used    17143
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.51
_cell_measurement_theta_min      2.99
_cell_volume                     4550.6(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0428
_diffrn_reflns_av_sigmaI/netI    0.0444
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            17143
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         2.99
_exptl_absorpt_coefficient_mu    1.827
_exptl_absorpt_correction_T_max  0.915
_exptl_absorpt_correction_T_min  0.808
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements
Sortav (Blessing 1995)
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.781
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2400
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.195
_refine_diff_density_min         -1.053
_refine_diff_density_rms         0.122
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     264
_refine_ls_number_reflns         5211
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.061
_refine_ls_R_factor_all          0.0439
_refine_ls_R_factor_gt           0.0334
_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^)+(0.0443P)^2^+2.9774P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0826
_refine_ls_wR_factor_ref         0.0881
_reflns_number_gt                4348
_reflns_number_total             5211
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0cc03314f.txt
_cod_data_source_block           complex4
_cod_original_cell_volume        4550.6(2)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7112964