Molecular Accordion: Vapoluminescence and Molecular Flexibility in the Orange and Green Luminescent Crystals of the Dimer, Au2(μ-bis-(diphenylphosphino)ethane)2Br2
Sang Ho Lim; Marilyn M. Olmstead; Alan L. Balch; Journal of the American Chemical Society 133 (2011) 10229–10238; doi:10.1021/ja2026807

data_4106348
_publ_section_title
;
 Molecular Accordion: Vapoluminescence and Molecular Flexibility in the
 Orange and Green Luminescent Crystals of the Dimer,
 Au2(\m-bis-(diphenylphosphino)ethane)2Br2
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10229
_journal_page_last               10238
_journal_paper_doi               10.1021/ja2026807
_journal_volume                  133
_journal_year                    2011
_chemical_formula_moiety         '2(C52 H48 Au2 Br2 P4), C4 H10 O'
_chemical_formula_sum            'C108 H106 Au4 Br4 O P8'
_chemical_formula_weight         2775.17
_chemical_name_common            AuBr(dppe)-Et2O
_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                76.550(3)
_cell_angle_beta                 77.600(3)
_cell_angle_gamma                79.600(3)
_cell_formula_units_Z            1
_cell_length_a                   11.7530(3)
_cell_length_b                   14.4241(3)
_cell_length_c                   15.4879(3)
_cell_measurement_reflns_used    9863
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      30.566
_cell_measurement_theta_min      2.465
_cell_volume                     2470.35(10)
_computing_cell_refinement       SAINT
_computing_data_collection       'Apex2 (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics    'SHELXTL 5.1, XP (Sheldrick, 1994)'
_computing_publication_material  SHELXS-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      90(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART ApexII'
_diffrn_measurement_method       \w
_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  0.0268
_diffrn_reflns_av_sigmaI/netI    0.0337
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            38429
_diffrn_reflns_theta_full        30.03
_diffrn_reflns_theta_max         30.03
_diffrn_reflns_theta_min         2.45
_exptl_absorpt_coefficient_mu    7.716
_exptl_absorpt_correction_T_max  0.428
_exptl_absorpt_correction_T_min  0.259
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2.10 (Sheldrick, 2003)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.865
_exptl_crystal_description       'irregular block '
_exptl_crystal_F_000             1338
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.11
_refine_diff_density_max         1.706
_refine_diff_density_min         -1.140
_refine_diff_density_rms         0.121
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     577
_refine_ls_number_reflns         14398
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0328
_refine_ls_R_factor_gt           0.0228
_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^)+(0.0188P)^2^+0.7236P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0439
_refine_ls_wR_factor_ref         0.0463
_reflns_number_gt                12109
_reflns_number_total             14398
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja2026807_si_009.cif
_cod_data_source_block           sh129
_cod_original_cell_volume        2470.35(9)
_cod_database_code               4106348