Modulation of Metallophilic Bonds: Solvent-Induced Isomerization and Luminescence Vapochromism of a Polymorphic Au-Cu Cluster
Igor O. Koshevoy; Yuh-Chia Chang; Antti J. Karttunen; Matti Haukka; Tapani Pakkanen; Pi-Tai Chou; Journal of the American Chemical Society 134 (2012) 6564–6567; doi:10.1021/ja3018994

data_4117843
_publ_section_title
;
 Modulation of Metallophilic Bonds: Solvent-Induced Isomerization and
 Luminescence Vapochromism of a Polymorphic Au-Cu Cluster
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6564
_journal_page_last               6567
_journal_paper_doi               10.1021/ja3018994
_journal_volume                  134
_journal_year                    2012
_chemical_formula_moiety         'C56 H72 Au4 Cu4 O8'
_chemical_formula_sum            'C56 H72 Au4 Cu4 O8'
_chemical_formula_weight         1915.16
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                113.804(2)
_cell_angle_beta                 103.210(3)
_cell_angle_gamma                103.317(3)
_cell_formula_units_Z            2
_cell_length_a                   14.2646(13)
_cell_length_b                   14.3128(7)
_cell_length_c                   16.4962(8)
_cell_measurement_reflns_used    9929
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.36
_cell_measurement_theta_min      2.30
_cell_volume                     2796.3(3)
_computing_cell_refinement       'SAINT (Bruker AXS, 2009)'
_computing_data_collection       'APEX2 (Bruker AXS, 2010)'
_computing_data_reduction        'SAINT (Bruker AXS, 2009)'
_computing_molecular_graphics    'Diamond v.3.2g (Brandenburg, 2011)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 16
_diffrn_measured_fraction_theta_full 0.960
_diffrn_measured_fraction_theta_max 0.960
_diffrn_measurement_device       '62mm x 62mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  'Bruker KAPPA APEX II DUO CCD'
_diffrn_measurement_method       '\f scans and \w scans with \k offset'
_diffrn_radiation_monochromator  'curved graphite crystal'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0368
_diffrn_reflns_av_sigmaI/netI    0.0532
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            27281
_diffrn_reflns_theta_full        25.53
_diffrn_reflns_theta_max         25.53
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    11.992
_exptl_absorpt_correction_T_max  0.5854
_exptl_absorpt_correction_T_min  0.1234
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    2.275
_exptl_crystal_description       needle
_exptl_crystal_F_000             1808
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         2.900
_refine_diff_density_min         -2.320
_refine_diff_density_rms         0.232
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     641
_refine_ls_number_reflns         10031
_refine_ls_number_restraints     126
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0917
_refine_ls_R_factor_gt           0.0568
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0118P)^2^+87.1965P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1067
_refine_ls_wR_factor_ref         0.1243
_reflns_number_gt                7248
_reflns_number_total             10031
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja3018994_si_002_3.cif
_cod_data_source_block           1d
_cod_database_code               4117843