Si-based Earth abundant clathrates for solar energy conversion
He, Yuping; Sui, Fan; Kauzlarich, Susan M.; Galli, Giulia; Energy & Environmental Science 7 (2014) 2598–; doi:10.1039/C4EE00256C

data_1517343
_publ_section_title
;
 Si-based Earth abundant clathrates for solar energy conversion
;
_journal_issue                   8
_journal_name_full               'Energy &amp; Environmental Science'
_journal_page_first              2598
_journal_paper_doi               10.1039/C4EE00256C
_journal_volume                  7
_journal_year                    2014
_chemical_formula_sum            'Al9.1 K8 Si36.9'
_chemical_formula_weight         1594.84
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           223
_symmetry_cell_setting           cubic
_symmetry_space_group_name_Hall  '-P 4n 2 3'
_symmetry_space_group_name_H-M   'P m -3 n'
_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                90.00
_cell_formula_units_Z            1
_cell_length_a                   10.4802(16)
_cell_length_b                   10.4802(16)
_cell_length_c                   10.4802(16)
_cell_measurement_reflns_used    264
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      27.46
_cell_measurement_theta_min      2.75
_cell_volume                     1151.1(3)
_computing_cell_refinement       'APEX2 Software Suite (Bruker,2005)'
_computing_data_collection       'APEX2 Software Suite (Bruker,2005)'
_computing_data_reduction        'APEX2 Software Suite (Bruker,2005)'
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      90(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type
'Bruker APEX2 CCD area-detector diffractometer'
_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  0.0300
_diffrn_reflns_av_sigmaI/netI    0.0056
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            13513
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         2.75
_exptl_absorpt_coefficient_mu    1.905
_exptl_absorpt_correction_T_max  0.9629
_exptl_absorpt_correction_T_min  0.9108
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'APEX2 Software Suite (Bruker,2005)'
_exptl_crystal_colour            Black
_exptl_crystal_density_diffrn    2.301
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             787
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.237
_refine_diff_density_min         -0.152
_refine_diff_density_rms         0.047
_refine_ls_goodness_of_fit_ref   0.860
_refine_ls_matrix_type           full
_refine_ls_number_parameters     17
_refine_ls_number_reflns         264
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.859
_refine_ls_R_factor_all          0.0123
_refine_ls_R_factor_gt           0.0113
_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^)+(0.0220P)^2^+1.0447P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0313
_refine_ls_wR_factor_ref         0.0322
_reflns_number_gt                248
_reflns_number_total             264
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             1515383
_cod_data_source_file            c4ee00256c2.cif
_cod_data_source_block           sad
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Cubic' changed to 'cubic' according
to
/usr/data/users/saulius/crontab/automatic-downloads/current/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      Pm-3n
_cod_original_formula_sum        'Al9.10 K8 Si36.90'
_cod_database_code               1517343