#------------------------------------------------------------------------------
#$Date: 2016-03-23 01:58:35 +0200 (Wed, 23 Mar 2016) $
#$Revision: 179164 $
#$URL: svn://www.crystallography.net/cod/cif/4/31/25/4312597.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_4312597
loop_
_publ_author_name
'Susan E. Latturner'
'Daniel Bilc'
'S. D. Mahanti'
'Mercouri G. Kanatzidis'
_publ_contact_author
; 
     Prof. M. G. Kanatzidis
     Department of Chemistry
     Michigan State University
     East Lansing, MI  48824    
;
_publ_contact_author_email       kanatzid@cem.msu.edu
_publ_contact_author_phone       '(517) 355-9715'
_publ_section_title
;
 RE2MAl6Si4 (RE = Gd, Tb, Dy; M = Au, Pt): Layered Quaternary
 Intermetallics Featuring CaAl2Si2-Type and YNiAl4Ge2-Type Slabs Grown
 from Aluminum Flux
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7959
_journal_page_last               7966
_journal_paper_doi               10.1021/ic0346432
_journal_volume                  42
_journal_year                    2003
_chemical_formula_sum            'Al6 Pt Si4 Tb2'
_chemical_formula_weight         787.17
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           166
_symmetry_cell_setting           rhombohedral
_symmetry_space_group_name_Hall  '-R 3 2"'
_symmetry_space_group_name_H-M   'R -3 m :H'
_atom_sites_solution_hydrogens   geom
_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            3
_cell_length_a                   4.1547(5)
_cell_length_b                   4.1547(5)
_cell_length_c                   50.993(9)
_cell_measurement_temperature    293(2)
_cell_volume                     762.29(19)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.935
_diffrn_measured_fraction_theta_max 0.935
_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  0.0492
_diffrn_reflns_av_sigmaI/netI    0.0322
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       85
_diffrn_reflns_limit_l_min       -85
_diffrn_reflns_number            3953
_diffrn_reflns_theta_full        37.21
_diffrn_reflns_theta_max         37.21
_diffrn_reflns_theta_min         11.40
_exptl_absorpt_coefficient_mu    28.420
_exptl_crystal_density_diffrn    5.144
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1026
_refine_diff_density_max         2.358
_refine_diff_density_min         -2.113
_refine_diff_density_rms         0.319
_refine_ls_extinction_coef       0.00044(16)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.996
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     22
_refine_ls_number_reflns         548
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.996
_refine_ls_R_factor_all          0.0362
_refine_ls_R_factor_gt           0.0229
_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/[σ²(Fo²)+(0.0234P)²+6.2031P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0479
_refine_ls_wR_factor_ref         0.0507
_reflns_number_gt                421
_reflns_number_total             548
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0346432si20030609_054510_3.cif
_cod_data_source_block           3sl238a
_cod_original_cell_volume        762.29(18)
_cod_original_sg_symbol_H-M      'R -3 m'
_cod_database_code               4312597
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-y, x-y, z'
'-x+y, -x, z'
'y, x, -z'
'x-y, -y, -z'
'-x, -x+y, -z'
'x+2/3, y+1/3, z+1/3'
'-y+2/3, x-y+1/3, z+1/3'
'-x+y+2/3, -x+1/3, z+1/3'
'y+2/3, x+1/3, -z+1/3'
'x-y+2/3, -y+1/3, -z+1/3'
'-x+2/3, -x+y+1/3, -z+1/3'
'x+1/3, y+2/3, z+2/3'
'-y+1/3, x-y+2/3, z+2/3'
'-x+y+1/3, -x+2/3, z+2/3'
'y+1/3, x+2/3, -z+2/3'
'x-y+1/3, -y+2/3, -z+2/3'
'-x+1/3, -x+y+2/3, -z+2/3'
'-x, -y, -z'
'y, -x+y, -z'
'x-y, x, -z'
'-y, -x, z'
'-x+y, y, z'
'x, x-y, z'
'-x+2/3, -y+1/3, -z+1/3'
'y+2/3, -x+y+1/3, -z+1/3'
'x-y+2/3, x+1/3, -z+1/3'
'-y+2/3, -x+1/3, z+1/3'
'-x+y+2/3, y+1/3, z+1/3'
'x+2/3, x-y+1/3, z+1/3'
'-x+1/3, -y+2/3, -z+2/3'
'y+1/3, -x+y+2/3, -z+2/3'
'x-y+1/3, x+2/3, -z+2/3'
'-y+1/3, -x+2/3, z+2/3'
'-x+y+1/3, y+2/3, z+2/3'
'x+1/3, x-y+2/3, z+2/3'
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
_atom_site_disorder_assembly
_atom_site_disorder_group
Pt1 Pt 0.0000 0.0000 0.0000 0.00826(12) Uani 1 12 d S . .
Tb2 Tb 0.3333 -0.3333 0.100267(7) 0.00796(12) Uani 1 6 d S . .
Si1 Si 0.0000 0.0000 0.13491(5) 0.0096(4) Uani 1 6 d S . .
Al3 Al -0.3333 0.3333 0.01536(5) 0.0094(4) Uani 1 6 d S . .
Al1 Al -0.3333 0.3333 0.14824(5) 0.0103(4) Uani 1 6 d S . .
Si2 Si -0.3333 0.3333 0.06701(4) 0.0086(4) Uani 1 6 d S . .
Al2 Al 0.0000 0.0000 0.04996(5) 0.0095(4) Uani 1 6 d S . .
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'
Tb Tb -0.1723 4.1537 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Pt Pt -1.7033 8.3905 '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
_geom_angle_publ_flag
Al3 Pt1 Al3 110.82(5) 19 19_455 ?
Al3 Pt1 Al3 180.00(11) 19 . ?
Al3 Pt1 Al3 69.18(5) 19_455 . ?
Al3 Pt1 Al3 110.82(5) 19 19_565 ?
Al3 Pt1 Al3 110.82(5) 19_455 19_565 ?
Al3 Pt1 Al3 69.18(5) . 19_565 ?
Al3 Pt1 Al3 69.18(5) 19 1_655 ?
Al3 Pt1 Al3 180.00(11) 19_455 1_655 ?
Al3 Pt1 Al3 110.82(5) . 1_655 ?
Al3 Pt1 Al3 69.18(5) 19_565 1_655 ?
Al3 Pt1 Al3 69.18(5) 19 1_545 ?
Al3 Pt1 Al3 69.18(5) 19_455 1_545 ?
Al3 Pt1 Al3 110.82(5) . 1_545 ?
Al3 Pt1 Al3 180.00(11) 19_565 1_545 ?
Al3 Pt1 Al3 110.82(5) 1_655 1_545 ?
Al3 Pt1 Al2 108.09(6) 19 . ?
Al3 Pt1 Al2 108.09(6) 19_455 . ?
Al3 Pt1 Al2 71.91(6) . . ?
Al3 Pt1 Al2 108.09(6) 19_565 . ?
Al3 Pt1 Al2 71.91(6) 1_655 . ?
Al3 Pt1 Al2 71.91(6) 1_545 . ?
Al3 Pt1 Al2 71.91(6) 19 19 ?
Al3 Pt1 Al2 71.91(6) 19_455 19 ?
Al3 Pt1 Al2 108.09(6) . 19 ?
Al3 Pt1 Al2 71.91(6) 19_565 19 ?
Al3 Pt1 Al2 108.09(6) 1_655 19 ?
Al3 Pt1 Al2 108.09(6) 1_545 19 ?
Al2 Pt1 Al2 180.0 . 19 ?
Si2 Tb2 Si2 90.00(5) 1_545 1_655 ?
Si2 Tb2 Si2 90.00(5) 1_545 1_645 ?
Si2 Tb2 Si2 90.00(5) 1_655 1_645 ?
Si2 Tb2 Si1 178.89(5) 1_545 1_655 ?
Si2 Tb2 Si1 90.78(4) 1_655 1_655 ?
Si2 Tb2 Si1 90.78(4) 1_645 1_655 ?
Si2 Tb2 Si1 90.78(4) 1_545 . ?
Si2 Tb2 Si1 90.78(4) 1_655 . ?
Si2 Tb2 Si1 178.89(5) 1_645 . ?
Si1 Tb2 Si1 88.42(5) 1_655 . ?
Si2 Tb2 Si1 90.78(4) 1_545 1_545 ?
Si2 Tb2 Si1 178.89(5) 1_655 1_545 ?
Si2 Tb2 Si1 90.78(4) 1_645 1_545 ?
Si1 Tb2 Si1 88.42(5) 1_655 1_545 ?
Si1 Tb2 Si1 88.42(5) . 1_545 ?
Si2 Tb2 Al1 134.27(2) 1_545 1_655 ?
Si2 Tb2 Al1 80.83(5) 1_655 1_655 ?
Si2 Tb2 Al1 134.27(2) 1_645 1_655 ?
Si1 Tb2 Al1 45.15(2) 1_655 1_655 ?
Si1 Tb2 Al1 45.15(2) . 1_655 ?
Si1 Tb2 Al1 98.07(5) 1_545 1_655 ?
Si2 Tb2 Al1 80.83(5) 1_545 1_545 ?
Si2 Tb2 Al1 134.27(2) 1_655 1_545 ?
Si2 Tb2 Al1 134.27(2) 1_645 1_545 ?
Si1 Tb2 Al1 98.07(5) 1_655 1_545 ?
Si1 Tb2 Al1 45.15(2) . 1_545 ?
Si1 Tb2 Al1 45.15(2) 1_545 1_545 ?
Al1 Tb2 Al1 74.65(5) 1_655 1_545 ?
Si2 Tb2 Al1 134.27(2) 1_545 1_645 ?
Si2 Tb2 Al1 134.27(2) 1_655 1_645 ?
Si2 Tb2 Al1 80.83(5) 1_645 1_645 ?
Si1 Tb2 Al1 45.15(2) 1_655 1_645 ?
Si1 Tb2 Al1 98.07(5) . 1_645 ?
Si1 Tb2 Al1 45.15(2) 1_545 1_645 ?
Al1 Tb2 Al1 74.65(5) 1_655 1_645 ?
Al1 Tb2 Al1 74.65(5) 1_545 1_645 ?
Al1 Si1 Al1 112.86(7) 1_655 . ?
Al1 Si1 Al1 112.86(7) 1_655 1_545 ?
Al1 Si1 Al1 112.86(7) . 1_545 ?
Al1 Si1 Al1 74.18(8) 1_655 25_455 ?
Al1 Si1 Al1 74.18(8) . 25_455 ?
Al1 Si1 Al1 74.18(8) 1_545 25_455 ?
Al1 Si1 Tb2 159.45(11) 1_655 1_455 ?
Al1 Si1 Tb2 76.96(4) . 1_455 ?
Al1 Si1 Tb2 76.96(4) 1_545 1_455 ?
Al1 Si1 Tb2 126.37(4) 25_455 1_455 ?
Al1 Si1 Tb2 76.96(4) 1_655 . ?
Al1 Si1 Tb2 159.45(11) . . ?
Al1 Si1 Tb2 76.96(4) 1_545 . ?
Al1 Si1 Tb2 126.37(4) 25_455 . ?
Tb2 Si1 Tb2 88.42(5) 1_455 . ?
Al1 Si1 Tb2 76.96(4) 1_655 1_565 ?
Al1 Si1 Tb2 76.96(4) . 1_565 ?
Al1 Si1 Tb2 159.45(11) 1_545 1_565 ?
Al1 Si1 Tb2 126.37(4) 25_455 1_565 ?
Tb2 Si1 Tb2 88.42(5) 1_455 1_565 ?
Tb2 Si1 Tb2 88.42(5) . 1_565 ?
Pt1 Al3 Pt1 110.82(5) . 1_455 ?
Pt1 Al3 Pt1 110.82(5) . 1_565 ?
Pt1 Al3 Pt1 110.82(5) 1_455 1_565 ?
Pt1 Al3 Si2 108.09(6) . . ?
Pt1 Al3 Si2 108.09(6) 1_455 . ?
Pt1 Al3 Si2 108.09(6) 1_565 . ?
Pt1 Al3 Al3 55.41(3) . 19_455 ?
Pt1 Al3 Al3 55.41(3) 1_455 19_455 ?
Pt1 Al3 Al3 128.76(15) 1_565 19_455 ?
Si2 Al3 Al3 123.15(9) . 19_455 ?
Pt1 Al3 Al3 55.41(3) . 19_565 ?
Pt1 Al3 Al3 128.76(15) 1_455 19_565 ?
Pt1 Al3 Al3 55.41(3) 1_565 19_565 ?
Si2 Al3 Al3 123.15(9) . 19_565 ?
Al3 Al3 Al3 92.94(12) 19_455 19_565 ?
Pt1 Al3 Al3 128.76(15) . 19_465 ?
Pt1 Al3 Al3 55.41(3) 1_455 19_465 ?
Pt1 Al3 Al3 55.41(3) 1_565 19_465 ?
Si2 Al3 Al3 123.15(9) . 19_465 ?
Al3 Al3 Al3 92.94(12) 19_455 19_465 ?
Al3 Al3 Al3 92.94(12) 19_565 19_465 ?
Pt1 Al3 Al2 124.53(3) . 1_565 ?
Pt1 Al3 Al2 124.53(3) 1_455 1_565 ?
Pt1 Al3 Al2 54.42(4) 1_565 1_565 ?
Si2 Al3 Al2 53.66(6) . 1_565 ?
Al3 Al3 Al2 176.82(13) 19_455 1_565 ?
Al3 Al3 Al2 89.25(5) 19_565 1_565 ?
Al3 Al3 Al2 89.25(5) 19_465 1_565 ?
Pt1 Al3 Al2 54.42(4) . . ?
Pt1 Al3 Al2 124.53(3) 1_455 . ?
Pt1 Al3 Al2 124.53(3) 1_565 . ?
Si2 Al3 Al2 53.66(6) . . ?
Al3 Al3 Al2 89.25(5) 19_455 . ?
Al3 Al3 Al2 89.25(5) 19_565 . ?
Al3 Al3 Al2 176.82(13) 19_465 . ?
Al2 Al3 Al2 88.47(8) 1_565 . ?
Pt1 Al3 Al2 124.53(3) . 1_455 ?
Pt1 Al3 Al2 54.42(4) 1_455 1_455 ?
Pt1 Al3 Al2 124.53(3) 1_565 1_455 ?
Si2 Al3 Al2 53.66(6) . 1_455 ?
Al3 Al3 Al2 89.25(5) 19_455 1_455 ?
Al3 Al3 Al2 176.82(13) 19_565 1_455 ?
Al3 Al3 Al2 89.25(5) 19_465 1_455 ?
Al2 Al3 Al2 88.47(8) 1_565 1_455 ?
Al2 Al3 Al2 88.47(8) . 1_455 ?
Si1 Al1 Si1 112.86(7) . 1_455 ?
Si1 Al1 Si1 112.86(7) . 1_565 ?
Si1 Al1 Si1 112.86(7) 1_455 1_565 ?
Si1 Al1 Si1 105.82(8) . 25_455 ?
Si1 Al1 Si1 105.82(8) 1_455 25_455 ?
Si1 Al1 Si1 105.82(8) 1_565 25_455 ?
Si1 Al1 Tb2 57.90(5) . 1_455 ?
Si1 Al1 Tb2 57.90(5) 1_455 1_455 ?
Si1 Al1 Tb2 118.62(10) 1_565 1_455 ?
Si1 Al1 Tb2 135.56(3) 25_455 1_455 ?
Si1 Al1 Tb2 57.90(5) . 1_565 ?
Si1 Al1 Tb2 118.62(10) 1_455 1_565 ?
Si1 Al1 Tb2 57.90(5) 1_565 1_565 ?
Si1 Al1 Tb2 135.56(3) 25_455 1_565 ?
Tb2 Al1 Tb2 74.65(5) 1_455 1_565 ?
Si1 Al1 Tb2 118.62(10) . 1_465 ?
Si1 Al1 Tb2 57.90(5) 1_455 1_465 ?
Si1 Al1 Tb2 57.90(5) 1_565 1_465 ?
Si1 Al1 Tb2 135.56(3) 25_455 1_465 ?
Tb2 Al1 Tb2 74.65(5) 1_455 1_465 ?
Tb2 Al1 Tb2 74.65(5) 1_565 1_465 ?
Al2 Si2 Al2 109.03(7) . 1_455 ?
Al2 Si2 Al2 109.03(7) . 1_565 ?
Al2 Si2 Al2 109.03(7) 1_455 1_565 ?
Al2 Si2 Al3 70.09(7) . . ?
Al2 Si2 Al3 70.09(7) 1_455 . ?
Al2 Si2 Al3 70.09(7) 1_565 . ?
Al2 Si2 Tb2 79.21(4) . 1_565 ?
Al2 Si2 Tb2 164.65(10) 1_455 1_565 ?
Al2 Si2 Tb2 79.21(4) 1_565 1_565 ?
Al3 Si2 Tb2 125.26(4) . 1_565 ?
Al2 Si2 Tb2 79.21(4) . 1_455 ?
Al2 Si2 Tb2 79.21(4) 1_455 1_455 ?
Al2 Si2 Tb2 164.65(10) 1_565 1_455 ?
Al3 Si2 Tb2 125.26(4) . 1_455 ?
Tb2 Si2 Tb2 90.00(5) 1_565 1_455 ?
Al2 Si2 Tb2 164.65(10) . 1_465 ?
Al2 Si2 Tb2 79.21(4) 1_455 1_465 ?
Al2 Si2 Tb2 79.21(4) 1_565 1_465 ?
Al3 Si2 Tb2 125.26(4) . 1_465 ?
Tb2 Si2 Tb2 90.00(5) 1_565 1_465 ?
Tb2 Si2 Tb2 90.00(5) 1_455 1_465 ?
Pt1 Al2 Si2 109.91(7) . . ?
Pt1 Al2 Si2 109.91(7) . 1_655 ?
Si2 Al2 Si2 109.03(7) . 1_655 ?
Pt1 Al2 Si2 109.91(7) . 1_545 ?
Si2 Al2 Si2 109.03(7) . 1_545 ?
Si2 Al2 Si2 109.03(7) 1_655 1_545 ?
Pt1 Al2 Al3 53.66(6) . 1_545 ?
Si2 Al2 Al3 125.49(4) . 1_545 ?
Si2 Al2 Al3 125.49(4) 1_655 1_545 ?
Si2 Al2 Al3 56.25(6) 1_545 1_545 ?
Pt1 Al2 Al3 53.66(6) . . ?
Si2 Al2 Al3 56.25(6) . . ?
Si2 Al2 Al3 125.49(4) 1_655 . ?
Si2 Al2 Al3 125.49(4) 1_545 . ?
Al3 Al2 Al3 88.47(8) 1_545 . ?
Pt1 Al2 Al3 53.66(6) . 1_655 ?
Si2 Al2 Al3 125.49(4) . 1_655 ?
Si2 Al2 Al3 56.25(6) 1_655 1_655 ?
Si2 Al2 Al3 125.49(4) 1_545 1_655 ?
Al3 Al2 Al3 88.47(8) 1_545 1_655 ?
Al3 Al2 Al3 88.47(8) . 1_655 ?
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_geom_bond_publ_flag
Pt1 Al3 2.5234(9) 19 ?
Pt1 Al3 2.5234(9) 19_455 ?
Pt1 Al3 2.5234(9) . ?
Pt1 Al3 2.5234(9) 19_565 ?
Pt1 Al3 2.5234(9) 1_655 ?
Pt1 Al3 2.5234(9) 1_545 ?
Pt1 Al2 2.548(3) . ?
Pt1 Al2 2.548(3) 19 ?
Tb2 Si2 2.9378(13) 1_545 ?
Tb2 Si2 2.9378(13) 1_655 ?
Tb2 Si2 2.9378(13) 1_645 ?
Tb2 Si1 2.9790(14) 1_655 ?
Tb2 Si1 2.9790(14) . ?
Tb2 Si1 2.9790(14) 1_545 ?
Tb2 Al1 3.4261(19) 1_655 ?
Tb2 Al1 3.4261(19) 1_545 ?
Tb2 Al1 3.4261(19) 1_645 ?
Si1 Al1 2.4931(10) 1_655 ?
Si1 Al1 2.4931(10) . ?
Si1 Al1 2.4931(10) 1_545 ?
Si1 Al1 2.559(4) 25_455 ?
Si1 Tb2 2.9790(14) 1_455 ?
Si1 Tb2 2.9790(14) 1_565 ?
Al3 Pt1 2.5234(9) 1_455 ?
Al3 Pt1 2.5234(9) 1_565 ?
Al3 Si2 2.633(3) . ?
Al3 Al3 2.865(3) 19_455 ?
Al3 Al3 2.865(3) 19_565 ?
Al3 Al3 2.865(3) 19_465 ?
Al3 Al2 2.978(2) 1_565 ?
Al3 Al2 2.978(2) . ?
Al3 Al2 2.978(2) 1_455 ?
Al1 Si1 2.4931(10) 1_455 ?
Al1 Si1 2.4931(10) 1_565 ?
Al1 Si1 2.559(4) 25_455 ?
Al1 Tb2 3.4261(19) 1_455 ?
Al1 Tb2 3.4261(19) 1_565 ?
Al1 Tb2 3.4261(19) 1_465 ?
Si2 Al2 2.5513(12) . ?
Si2 Al2 2.5513(12) 1_455 ?
Si2 Al2 2.5513(12) 1_565 ?
Si2 Tb2 2.9378(13) 1_565 ?
Si2 Tb2 2.9378(13) 1_455 ?
Si2 Tb2 2.9378(13) 1_465 ?
Al2 Si2 2.5513(12) 1_655 ?
Al2 Si2 2.5513(12) 1_545 ?
Al2 Al3 2.978(2) 1_545 ?
Al2 Al3 2.978(2) 1_655 ?
