Syntheses, Structures, and Physical Properties of LnAsTe (Ln = La, Pr, Sm, Gd, Dy, Er)
Fu Qiang Huang; Paul Brazis; Carl R. Kannewurf; James A. Ibers; Inorganic Chemistry 39 (2000) 3176–3180; doi:10.1021/ic000187v

data_4321149
_publ_section_title
;
 Syntheses, Structures, and Physical Properties of LnAsTe (Ln = La, Pr,
 Sm, Gd, Dy, Er)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              3176
_journal_page_last               3180
_journal_paper_doi               10.1021/ic000187v
_journal_volume                  39
_journal_year                    2000
_chemical_formula_sum            'As La Te'
_chemical_formula_weight         341.43
_chemical_name_systematic
; 
lanthanum asernic telluride 
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.8354(11)
_cell_length_b                   4.1721(6)
_cell_length_c                   10.2985(14)
_cell_measurement_temperature    153(2)
_cell_volume                     336.66(8)
_computing_cell_refinement       'SMART version 5.054 (Bruker, 1999)'
_computing_data_collection       'SMART version 5.054 (Bruker, 1999)'
_computing_data_reduction        'SAINT-Plus version 6.0 (Bruker, 1999)'
_computing_molecular_graphics    'SHELXTL-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXTL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.955
_diffrn_measured_fraction_theta_max 0.955
_diffrn_measurement_device_type  'Bruker Smart 1000 CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'standard-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0367
_diffrn_reflns_av_sigmaI/netI    0.0182
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            2724
_diffrn_reflns_theta_full        28.49
_diffrn_reflns_theta_max         28.49
_diffrn_reflns_theta_min         3.27
_diffrn_standards_decay_%        <2
_exptl_absorpt_coefficient_mu    30.630
_exptl_absorpt_correction_T_max  0.128
_exptl_absorpt_correction_T_min  0.062
_exptl_absorpt_process_details   'face indexed (Sheldrick, 1997)'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    6.736
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             568
_exptl_crystal_size_max          0.142
_exptl_crystal_size_mid          0.134
_exptl_crystal_size_min          0.098
_refine_diff_density_max         1.879
_refine_diff_density_min         -1.458
_refine_diff_density_rms         0.357
_refine_ls_extinction_coef       0.0055(7)
_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   1.662
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     20
_refine_ls_number_reflns         465
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.662
_refine_ls_R_factor_all          0.0270
_refine_ls_R_factor_gt           0.0261
_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 
 [1.00000+0.00000exp(0.00(sin\q/\l)^2^)]/ 
   [\s^2^(Fo^2^)+0.0000+0.0000*P+(0.0400P)^2^+1.0000sin\q/\l] 
 where P = 0.33333Fo^2^ + 0.66667Fc^2^ 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0858
_refine_ls_wR_factor_ref         0.0862
_reflns_number_gt                451
_reflns_number_total             465
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic000187v_1.cif
_cod_data_source_block           la
_cod_database_code               4321149