Syntheses of Mixed-Ligand Tetranuclear Gold(I)-Nitrogen Clusters by Ligand Exchange Reactions with the Dinuclear Gold(I) Formamidinate Complex Au2(2,6-Me2Ph-form)2
Hanan E. Abdou; Ahmed A. Mohamed; John P. Fackler; Inorganic Chemistry 46 (2007) 141–146; doi:10.1021/ic0612449

data_4306937
_publ_section_title
;
Syntheses of Mixed-Ligand Tetranuclear Gold(I)-Nitrogen Clusters by
Ligand Exchange Reactions with the Dinuclear Gold(I) Formamidinate Complex
Au2(2,6-Me2Ph-form)2
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              141
_journal_page_last               146
_journal_paper_doi               10.1021/ic0612449
_journal_volume                  46
_journal_year                    2007
_chemical_formula_sum            'C66 H60 Au4 N8 O'
_chemical_formula_weight         1769.10
_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                 90.94(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   23.058(5)
_cell_length_b                   14.314(3)
_cell_length_c                   18.528(4)
_cell_measurement_temperature    110(2)
_cell_volume                     6114(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0554
_diffrn_reflns_av_sigmaI/netI    0.0539
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            43077
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.77
_exptl_absorpt_coefficient_mu    9.616
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   SADAB
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.922
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needles
_exptl_crystal_F_000             3344
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         4.483
_refine_diff_density_min         -1.077
_refine_diff_density_rms         0.297
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.178
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     646
_refine_ls_number_reflns         10709
_refine_ls_number_restraints     473
_refine_ls_restrained_S_all      1.156
_refine_ls_R_factor_all          0.0988
_refine_ls_R_factor_gt           0.0589
_refine_ls_shift/su_max          0.152
_refine_ls_shift/su_mean         0.007
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0787P)^2^+71.0033P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1374
_refine_ls_wR_factor_ref         0.1796
_reflns_number_gt                7328
_reflns_number_total             10709
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0612449si20060705_055847.cif
_cod_data_source_block           pzn
_cod_database_code               4306937