Selective ion probe for Mg2+ based on Au(I)Au(I) interactions in a tripodal alkynylgold(I) complex with oligoether pendants.
He, Xiaoming; Cheng, Eddie Chung-Chin; Zhu, Nianyong; Yam, Vivian Wing-Wah; Chemical communications (Cambridge, England) 34 (2009) 4016–4018; doi:10.1039/b902690h

data_7104593
_publ_section_title
;
 Selective ion probe for Mg2+ based on Au(I)Au(I) interactions in a
 tripodal alkynylgold(I) complex with oligoether pendants.
;
_journal_issue                   27
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              4016
_journal_page_last               4018
_journal_paper_doi               10.1039/b902690h
_journal_volume                  34
_journal_year                    2009
_chemical_formula_moiety         'C65 H55 Au3 O0.50 P3'
_chemical_formula_sum            'C65 H55 Au3 O0.5 P3'
_chemical_formula_weight         1527.90
_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                 96.25(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   29.200(6)
_cell_length_b                   13.992(2)
_cell_length_c                   28.986(6)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    301(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     11772(4)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_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-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      301(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\w 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  0.0452
_diffrn_reflns_av_sigmaI/netI    0.0533
_diffrn_reflns_limit_h_max       35
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            67724
_diffrn_reflns_theta_full        25.68
_diffrn_reflns_theta_max         25.68
_diffrn_reflns_theta_min         1.65
_exptl_absorpt_coefficient_mu    7.579
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.250168
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            light-yellow
_exptl_crystal_density_diffrn    1.724
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             5848
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.420
_refine_diff_density_min         -0.970
_refine_diff_density_rms         0.159
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1073
_refine_ls_number_reflns         22320
_refine_ls_number_restraints     21
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0830
_refine_ls_R_factor_gt           0.0498
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0609P)^2^+46.0137P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1189
_refine_ls_wR_factor_ref         0.1343
_reflns_number_gt                15563
_reflns_number_total             22320
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b902690h.txt
_cod_data_source_block           wt1665
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_original_formula_sum        'C65 H55 Au3 O0.50 P3'
_cod_database_code               7104593