A new series of long-range ordered metastable phases in the system M‒Sb‒Te (M = Ge, Ag)
Schneider, Matthias N.; Seibald, Markus; Oeckler, Oliver; Dalton Transactions  (2009) 2004–2011; doi:10.1039/b814000f

data_7000755
_publ_section_title
;
 A new series of long-range ordered metastable phases in the system
 M--Sb--Te (M = Ge, Ag)
;
_journal_issue                   11
_journal_name_full               'Dalton Transactions'
_journal_page_first              2004
_journal_page_last               2011
_journal_paper_doi               10.1039/b814000f
_journal_year                    2009
_chemical_formula_sum            'Ag0.24 Sb10.76 Te4'
_chemical_formula_weight         1846.32
_chemical_name_systematic
; 
 Silver antimony telluride 
;
_space_group_IT_number           164
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-P 3 2"'
_symmetry_space_group_name_H-M   'P -3 m 1'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   none
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            1
_cell_length_a                   4.2820(10)
_cell_length_b                   4.2820(10)
_cell_length_c                   28.636(5)
_cell_measurement_reflns_used    1675
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      30
_cell_measurement_theta_min      5
_cell_volume                     454.71(17)
_computing_cell_refinement       'IPDS software package (Stoe, 2002)'
_computing_data_collection       'IPDS software package (Stoe, 2002)'
_computing_data_reduction        'X-Area (Stoe, 2002)'
_computing_molecular_graphics    'Diamond 3.1'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_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  0.1040
_diffrn_reflns_av_sigmaI/netI    0.0462
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            4373
_diffrn_reflns_theta_full        29.90
_diffrn_reflns_theta_max         29.90
_diffrn_reflns_theta_min         2.85
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    22.215
_exptl_absorpt_correction_T_max  0.641
_exptl_absorpt_correction_T_min  0.028
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'from equivalents, scaled'
_exptl_crystal_colour            metallic_dark_grey
_exptl_crystal_density_diffrn    6.742
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.094
_refine_diff_density_min         -1.465
_refine_diff_density_rms         0.325
_refine_ls_extinction_coef       0.0027(5)
_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   1.064
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     26
_refine_ls_number_reflns         601
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0839
_refine_ls_R_factor_gt           0.0538
_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^)+(0.0514P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1023
_refine_ls_wR_factor_ref         0.1207
_reflns_number_gt                333
_reflns_number_total             601
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b814000f.txt
_cod_data_source_block           p-3m1
_cod_original_sg_symbol_H-M      P-3m1
_cod_database_code               7000755