Turning Gold into "Diamond": A Family of Hexagonal Diamond-Type Au-Frameworks Interconnected by Triangular Clusters in the Sr-Al-Au System.
Palasyuk, Andriy; Grin, Yuri; Miller, Gordon J.; Journal of the American Chemical Society 136 (2014) 3108–; doi:10.1021/ja411150e

data_4120619
_publ_section_title
;
 Turning Gold into &quot;Diamond&quot;: A Family of Hexagonal Diamond-Type
 Au-Frameworks Interconnected by Triangular Clusters in the Sr-Al-Au
 System.
;
_journal_issue                   8
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              3108
_journal_paper_doi               10.1021/ja411150e
_journal_volume                  136
_journal_year                    2014
_chemical_formula_sum            'Al2.82 Au6.18 Sr2'
_chemical_formula_weight         1469.14
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           167
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-R 3 2"c'
_symmetry_space_group_name_H-M   'R -3 c :H'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            6
_cell_length_a                   8.4475(12)
_cell_length_b                   8.4475(12)
_cell_length_c                   21.735(4)
_cell_measurement_reflns_used    11367
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      36.24
_cell_measurement_theta_min      3.36
_cell_volume                     1343.2(4)
_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      298(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.1101
_diffrn_reflns_av_sigmaI/netI    0.0405
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            11367
_diffrn_reflns_theta_full        36.24
_diffrn_reflns_theta_max         36.24
_diffrn_reflns_theta_min         3.36
_exptl_absorpt_coefficient_mu    112.896
_exptl_absorpt_correction_T_max  0.5578
_exptl_absorpt_correction_T_min  0.1163
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            silver
_exptl_crystal_density_diffrn    10.897
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             3607
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.05
_refine_diff_density_max         2.785
_refine_diff_density_min         -2.812
_refine_diff_density_rms         0.970
_refine_ls_extinction_coef       0.000134(16)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.178
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     20
_refine_ls_number_reflns         732
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.178
_refine_ls_R_factor_all          0.0515
_refine_ls_R_factor_gt           0.0449
_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^)+(0.0000P)^2^+641.8536P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0981
_refine_ls_wR_factor_ref         0.1003
_reflns_number_gt                634
_reflns_number_total             732
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja411150e_si_002.cif
_cod_data_source_block           Sr2Au6.18(1)Al2.82
_cod_depositor_comments
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The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      R-3c
_cod_database_code               4120619