#------------------------------------------------------------------------------
#$Date: 2016-02-14 06:40:26 +0200 (Sun, 14 Feb 2016) $
#$Revision: 176432 $
#$URL: svn://www.crystallography.net/cod/cif/4/32/87/4328785.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_4328785
loop_
_publ_author_name
'John H. Roudebush'
'Naohito Tsujii'
'Antonio Hurtando'
'Håkon Hope'
'Yuri Grin'
'Susan M. Kauzlarich'
_publ_section_title
;
 Phase Range of the Type-I Clathrate Sr8AlxSi46-x and Crystal Structure of
 Sr8Al10Si36
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4161
_journal_page_last               4169
_journal_paper_doi               10.1021/ic2024814
_journal_volume                  51
_journal_year                    2012
_chemical_formula_sum            'Al10.32 Si35.62 Sr8'
_chemical_formula_weight         1979.96
_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                   10.44950(10)
_cell_length_b                   10.44950(10)
_cell_length_c                   10.44950(10)
_cell_measurement_reflns_used    7726
_cell_measurement_temperature    90
_cell_measurement_theta_max      51.84
_cell_measurement_theta_min      2.76
_cell_volume                     1141.002(19)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      90
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Apex II'
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0376
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            22791
_diffrn_reflns_theta_full        49.10
_diffrn_reflns_theta_max         49.10
_diffrn_reflns_theta_min         2.76
_exptl_absorpt_coefficient_mu    10.408
_exptl_absorpt_correction_T_max  0.3706
_exptl_absorpt_correction_T_min  0.2463
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   '(Sheldrick, G. M. SADABS; 1999.)'
_exptl_crystal_colour            silver
_exptl_crystal_density_diffrn    2.849
_exptl_crystal_description       block
_exptl_crystal_F_000             926
_exptl_crystal_size_max          0.187
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.119
_refine_diff_density_max         0.509
_refine_diff_density_min         -0.336
_refine_diff_density_rms         0.081
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_matrix_type           full
_refine_ls_number_parameters     17
_refine_ls_number_reflns         22791
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0460
_refine_ls_R_factor_gt           0.0278
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[σ²(Fo²)+(0.0063P)²+0.3268P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0483
_refine_ls_wR_factor_ref         0.0522
_reflns_number_gt                17362
_reflns_number_total             22791
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic2024814_si_002_1.cif
_cod_data_source_block           ahc8b_a3
_cod_original_sg_symbol_Hall     -P4n23
_cod_database_code               4328785
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, z'
'-x, y, -z'
'x, -y, -z'
'z, x, y'
'z, -x, -y'
'-z, -x, y'
'-z, x, -y'
'y, z, x'
'-y, z, -x'
'y, -z, -x'
'-y, -z, x'
'y+1/2, x+1/2, -z+1/2'
'-y+1/2, -x+1/2, -z+1/2'
'y+1/2, -x+1/2, z+1/2'
'-y+1/2, x+1/2, z+1/2'
'x+1/2, z+1/2, -y+1/2'
'-x+1/2, z+1/2, y+1/2'
'-x+1/2, -z+1/2, -y+1/2'
'x+1/2, -z+1/2, y+1/2'
'z+1/2, y+1/2, -x+1/2'
'z+1/2, -y+1/2, x+1/2'
'-z+1/2, y+1/2, x+1/2'
'-z+1/2, -y+1/2, -x+1/2'
'-x, -y, -z'
'x, y, -z'
'x, -y, z'
'-x, y, z'
'-z, -x, -y'
'-z, x, y'
'z, x, -y'
'z, -x, y'
'-y, -z, -x'
'y, -z, x'
'-y, z, x'
'y, z, -x'
'-y-1/2, -x-1/2, z-1/2'
'y-1/2, x-1/2, z-1/2'
'-y-1/2, x-1/2, -z-1/2'
'y-1/2, -x-1/2, -z-1/2'
'-x-1/2, -z-1/2, y-1/2'
'x-1/2, -z-1/2, -y-1/2'
'x-1/2, z-1/2, y-1/2'
'-x-1/2, z-1/2, -y-1/2'
'-z-1/2, -y-1/2, x-1/2'
'-z-1/2, y-1/2, -x-1/2'
'z-1/2, -y-1/2, -x-1/2'
'z-1/2, y-1/2, x-1/2'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
Sr1 Sr 0.0000 0.0000 0.0000 0.00625(1) Uiso 1 24 d S
Sr2 Sr 0.2500 0.5000 0.0000 0.01352(1) Uani 1 8 d S
Si3 Si 0.0000 0.304313(9) 0.114515(9) 0.00789(2) Uani 0.964(5) 2 d SP
Al3 Al 0.0000 0.304313(9) 0.114515(9) 0.00789(2) Uani 0.036(5) 2 d SP
Si4 Si 0.184290(6) 0.184290(6) 0.184290(6) 0.00732(3) Uiso 0.780(7) 3 d SP
Al4 Al 0.184290(6) 0.184290(6) 0.184290(6) 0.00732(3) Uiso 0.220(7) 3 d SP
Al5 Al 0.2500 0.0000 0.5000 0.00637(5) Uani 0.9903(12) 8 d SP
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
Al Al 0.0645 0.0514 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Si Si 0.0817 0.0704 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Sr Sr -1.5307 3.2498 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
Al4 Sr1 Al4 109.5 25 28
Si4 Sr1 Al4 109.5 25 28
Al4 Sr1 Al4 70.5 25 4
Si4 Sr1 Al4 70.5 25 4
Al4 Sr1 Al4 180.000(4) 28 4
Al4 Sr1 Al4 109.5 25 27
Si4 Sr1 Al4 109.5 25 27
Al4 Sr1 Al4 109.5 28 27
Al4 Sr1 Al4 70.5 4 27
Al4 Sr1 Al4 70.5 25 3
Si4 Sr1 Al4 70.5 25 3
Al4 Sr1 Al4 70.5 28 3
Al4 Sr1 Al4 109.5 4 3
Al4 Sr1 Al4 180.000(5) 27 3
Al4 Sr1 Al4 109.5 25 26
Si4 Sr1 Al4 109.5 25 26
Al4 Sr1 Al4 109.5 28 26
Al4 Sr1 Al4 70.5 4 26
Al4 Sr1 Al4 109.5 27 26
Al4 Sr1 Al4 70.5 3 26
Al4 Sr1 Al4 70.5 25 2
Si4 Sr1 Al4 70.5 25 2
Al4 Sr1 Al4 70.5 28 2
Al4 Sr1 Al4 109.5 4 2
Al4 Sr1 Al4 70.5 27 2
Al4 Sr1 Al4 109.5 3 2
Al4 Sr1 Al4 180.000(5) 26 2
Al4 Sr1 Si4 109.5 25 28
Si4 Sr1 Si4 109.5 25 28
Al4 Sr1 Si4 180.000(4) 4 28
Al4 Sr1 Si4 109.5 27 28
Al4 Sr1 Si4 70.5 3 28
Al4 Sr1 Si4 109.5 26 28
Al4 Sr1 Si4 70.5 2 28
Al4 Sr1 Si4 70.5 25 4
Si4 Sr1 Si4 70.5 25 4
Al4 Sr1 Si4 180.000(4) 28 4
Al4 Sr1 Si4 70.5 27 4
Al4 Sr1 Si4 109.5 3 4
Al4 Sr1 Si4 70.5 26 4
Al4 Sr1 Si4 109.5 2 4
Si4 Sr1 Si4 180.000(4) 28 4
Al4 Sr1 Si4 109.5 25 27
Si4 Sr1 Si4 109.5 25 27
Al4 Sr1 Si4 109.5 28 27
Al4 Sr1 Si4 70.5 4 27
Al4 Sr1 Si4 180.000(5) 3 27
Al4 Sr1 Si4 109.5 26 27
Al4 Sr1 Si4 70.5 2 27
Si4 Sr1 Si4 109.5 28 27
Si4 Sr1 Si4 70.5 4 27
Al4 Sr1 Si4 70.5 25 3
Si4 Sr1 Si4 70.5 25 3
Al4 Sr1 Si4 70.5 28 3
Al4 Sr1 Si4 109.5 4 3
Al4 Sr1 Si4 180.000(5) 27 3
Al4 Sr1 Si4 70.5 26 3
Al4 Sr1 Si4 109.5 2 3
Si4 Sr1 Si4 70.5 28 3
Si4 Sr1 Si4 109.5 4 3
Si4 Sr1 Si4 180.000(5) 27 3
Si3 Sr2 Al3 123.278(1) . 17
Si3 Sr2 Si3 123.278(1) . 17
Si3 Sr2 Al3 39.669(3) . 26
Al3 Sr2 Al3 160.417(3) 17 26
Si3 Sr2 Al3 160.417(3) 17 26
Si3 Sr2 Si3 39.669(3) . 26
Al3 Sr2 Si3 160.417(3) 17 26
Si3 Sr2 Si3 160.417(3) 17 26
Si3 Sr2 Al3 98.930(2) . 42_666
Al3 Sr2 Al3 39.670(3) 17 42_666
Si3 Sr2 Al3 39.670(3) 17 42_666
Al3 Sr2 Al3 123.277(1) 26 42_666
Si3 Sr2 Al3 123.277(1) 26 42_666
Si3 Sr2 Si3 98.930(2) . 42_666
Al3 Sr2 Si3 39.670(3) 17 42_666
Si3 Sr2 Si3 39.670(3) 17 42_666
Al3 Sr2 Si3 123.277(1) 26 42_666
Si3 Sr2 Si3 123.277(1) 26 42_666
Si3 Sr2 Al3 160.417(3) . 18_554
Al3 Sr2 Al3 70.874(3) 17 18_554
Si3 Sr2 Al3 70.874(3) 17 18_554
Al3 Sr2 Al3 123.277(1) 26 18_554
Si3 Sr2 Al3 123.277(1) 26 18_554
Al3 Sr2 Al3 84.412(2) 42_666 18_554
Si3 Sr2 Al3 84.412(2) 42_666 18_554
Si3 Sr2 Si3 160.417(3) . 18_554
Al3 Sr2 Si3 70.874(3) 17 18_554
Si3 Sr2 Si3 70.874(3) 17 18_554
Al3 Sr2 Si3 123.277(1) 26 18_554
Si3 Sr2 Si3 123.277(1) 26 18_554
Al3 Sr2 Si3 84.412(2) 42_666 18_554
Si3 Sr2 Si3 84.412(2) 42_666 18_554
Si3 Sr2 Si3 84.411(2) . 25_565
Al3 Sr2 Si3 123.277(1) 17 25_565
Si3 Sr2 Si3 123.277(1) 17 25_565
Al3 Sr2 Si3 70.874(3) 26 25_565
Si3 Sr2 Si3 70.874(3) 26 25_565
Al3 Sr2 Si3 160.417(3) 42_666 25_565
Si3 Sr2 Si3 160.417(3) 42_666 25_565
Al3 Sr2 Si3 98.930(2) 18_554 25_565
Si3 Sr2 Si3 98.930(2) 18_554 25_565
Si3 Sr2 Al3 84.411(2) . 25_565
Al3 Sr2 Al3 123.277(1) 17 25_565
Si3 Sr2 Al3 123.277(1) 17 25_565
Al3 Sr2 Al3 70.874(3) 26 25_565
Si3 Sr2 Al3 70.874(3) 26 25_565
Al3 Sr2 Al3 160.417(3) 42_666 25_565
Si3 Sr2 Al3 160.417(3) 42_666 25_565
Al3 Sr2 Al3 98.930(2) 18_554 25_565
Si3 Sr2 Al3 98.930(2) 18_554 25_565
Al3 Si3 Al4 107.602(3) 26 28
Si3 Si3 Al4 107.602(3) 26 28
Al3 Si3 Si4 107.602(3) 26 28
Si3 Si3 Si4 107.602(3) 26 28
Al3 Si3 Si4 107.603(3) 26 .
Si3 Si3 Si4 107.603(3) 26 .
Al4 Si3 Si4 106.016(5) 28 .
Si4 Si3 Si4 106.016(5) 28 .
Al3 Si3 Al5 124.697(2) 26 9
Si3 Si3 Al5 124.697(2) 26 9
Al4 Si3 Al5 104.806(4) 28 9
Si4 Si3 Al5 104.806(4) 28 9
Si4 Si3 Al5 104.805(4) . 9
Al3 Si3 Sr1 69.378(2) 26 .
Si3 Si3 Sr1 69.378(2) 26 .
Al4 Si3 Sr1 67.644(3) 28 .
Si4 Si3 Sr1 67.644(3) 28 .
Si4 Si3 Sr1 67.645(3) . .
Al5 Si3 Sr1 165.925(4) 9 .
Al3 Si3 Sr2 70.166(1) 26 .
Si3 Si3 Sr2 70.166(1) 26 .
Al4 Si3 Sr2 174.785(3) 28 .
Si4 Si3 Sr2 174.785(3) 28 .
Si4 Si3 Sr2 79.197(2) . .
Al5 Si3 Sr2 73.527(2) 9 .
Sr1 Si3 Sr2 115.034(2) . .
Al3 Si3 Sr2 70.166(1) 26 25_565
Si3 Si3 Sr2 70.166(1) 26 25_565
Al4 Si3 Sr2 79.198(2) 28 25_565
Si4 Si3 Sr2 79.198(2) 28 25_565
Si4 Si3 Sr2 174.785(3) . 25_565
Al5 Si3 Sr2 73.527(2) 9 25_565
Sr1 Si3 Sr2 115.034(2) . 25_565
Sr2 Si3 Sr2 95.589(2) . 25_565
Al4 Si4 Al3 109.597(3) 14 9
Si4 Si4 Al3 109.597(3) 14 9
Al4 Si4 Al3 109.597(3) 14 5
Si4 Si4 Al3 109.597(3) 14 5
Al3 Si4 Al3 109.345(3) 9 5
Al4 Si4 Si3 109.597(3) 14 5
Si4 Si4 Si3 109.597(3) 14 5
Al3 Si4 Si3 109.345(3) 9 5
Al4 Si4 Si3 109.597(3) 14 9
Si4 Si4 Si3 109.597(3) 14 9
Al3 Si4 Si3 109.345(3) 5 9
Si3 Si4 Si3 109.345(3) 5 9
Al4 Si4 Si3 109.598(3) 14 .
Si4 Si4 Si3 109.598(3) 14 .
Al3 Si4 Si3 109.344(3) 9 .
Al3 Si4 Si3 109.345(3) 5 .
Si3 Si4 Si3 109.345(3) 5 .
Si3 Si4 Si3 109.344(3) 9 .
Al4 Si4 Sr1 180.000(8) 14 .
Si4 Si4 Sr1 180.000(8) 14 .
Al3 Si4 Sr1 70.403(3) 9 .
Al3 Si4 Sr1 70.403(3) 5 .
Si3 Si4 Sr1 70.403(3) 5 .
Si3 Si4 Sr1 70.403(3) 9 .
Si3 Si4 Sr1 70.402(3) . .
Al3 Al5 Al3 108.906(2) 5 45_666
Si3 Al5 Al3 108.906(2) 5 45_666
Al3 Al5 Si3 108.906(2) 5 45_666
Si3 Al5 Si3 108.906(2) 5 45_666
Al3 Al5 Al3 108.906(2) 5 46_656
Si3 Al5 Al3 108.906(2) 5 46_656
Al3 Al5 Al3 110.607(4) 45_666 46_656
Si3 Al5 Al3 110.607(4) 45_666 46_656
Al3 Al5 Al3 110.607(4) 5 6_556
Si3 Al5 Al3 110.607(4) 5 6_556
Al3 Al5 Al3 108.906(2) 45_666 6_556
Si3 Al5 Al3 108.906(2) 45_666 6_556
Al3 Al5 Al3 108.906(2) 46_656 6_556
Al3 Al5 Si3 110.607(4) 5 6_556
Si3 Al5 Si3 110.607(4) 5 6_556
Al3 Al5 Si3 108.906(2) 45_666 6_556
Si3 Al5 Si3 108.906(2) 45_666 6_556
Al3 Al5 Si3 108.906(2) 46_656 6_556
Al3 Al5 Si3 108.906(2) 5 46_656
Si3 Al5 Si3 108.906(2) 5 46_656
Al3 Al5 Si3 110.607(4) 45_666 46_656
Si3 Al5 Si3 110.607(4) 45_666 46_656
Al3 Al5 Si3 108.906(2) 6_556 46_656
Si3 Al5 Si3 108.906(2) 6_556 46_656
Al3 Al5 Sr2 66.265(1) 5 29_556
Si3 Al5 Sr2 66.265(1) 5 29_556
Al3 Al5 Sr2 169.697(2) 45_666 29_556
Si3 Al5 Sr2 169.697(2) 45_666 29_556
Al3 Al5 Sr2 79.697(2) 46_656 29_556
Al3 Al5 Sr2 66.265(1) 6_556 29_556
Si3 Al5 Sr2 66.265(1) 6_556 29_556
Si3 Al5 Sr2 79.697(2) 46_656 29_556
Al3 Al5 Sr2 169.697(2) 5 33_656
Si3 Al5 Sr2 169.697(2) 5 33_656
Al3 Al5 Sr2 66.265(1) 45_666 33_656
Si3 Al5 Sr2 66.265(1) 45_666 33_656
Al3 Al5 Sr2 66.265(1) 46_656 33_656
Al3 Al5 Sr2 79.697(2) 6_556 33_656
Si3 Al5 Sr2 79.697(2) 6_556 33_656
Si3 Al5 Sr2 66.265(1) 46_656 33_656
Sr2 Al5 Sr2 120.0 29_556 33_656
Al3 Al5 Sr2 66.265(1) 5 5
Si3 Al5 Sr2 66.265(1) 5 5
Al3 Al5 Sr2 79.697(2) 45_666 5
Si3 Al5 Sr2 79.697(2) 45_666 5
Al3 Al5 Sr2 169.697(2) 46_656 5
Al3 Al5 Sr2 66.265(1) 6_556 5
Si3 Al5 Sr2 66.265(1) 6_556 5
Si3 Al5 Sr2 169.697(2) 46_656 5
Sr2 Al5 Sr2 90.0 29_556 5
Sr2 Al5 Sr2 120.0 33_656 5
Al3 Al5 Sr2 79.697(2) 5 9
Si3 Al5 Sr2 79.697(2) 5 9
Al3 Al5 Sr2 66.265(1) 45_666 9
Si3 Al5 Sr2 66.265(1) 45_666 9
Al3 Al5 Sr2 66.265(1) 46_656 9
Al3 Al5 Sr2 169.697(2) 6_556 9
Si3 Al5 Sr2 169.697(2) 6_556 9
Si3 Al5 Sr2 66.265(1) 46_656 9
Sr2 Al5 Sr2 120.0 29_556 9
Sr2 Al5 Sr2 90.0 33_656 9
Sr2 Al5 Sr2 120.0 5 9
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
Sr1 Al4 3.33545(12) 25
Sr1 Si4 3.33545(12) 25
Sr2 Si3 3.5267 .
Sr2 Al3 3.5267 17
Si3 Al3 2.39327(19) 26
Si3 Si3 2.39327(19) 26
Si3 Al4 2.4110 28
Si3 Si4 2.4110 28
Si3 Al5 2.4871 9
Si3 Sr2 3.5267 25_565
Si4 Al4 2.3786(2) 14
Si4 Si4 2.3786(2) 14
Si4 Al3 2.4110 9
Si4 Si3 2.4110 5
Al5 Al3 2.4871 45_666
Al5 Sr2 3.6945 29_556
