Eu3(AsS4)2 and AxEu(3-y)As(5-z)S10 (A = Li, Na): compounds with simple and complex thioarsenate building blocks.
Bera, Tarun K.; Iyer, Ratnasabapathy G.; Malliakas, Christos D.; Kanatzidis, Mercouri G.; Inorganic chemistry 46 (2007) 8466–8468; doi:10.1021/ic701067r

data_4339535
_publ_section_title
;
 Eu3(AsS4)2 and AxEu(3-y)As(5-z)S10 (A = Li, Na): compounds with simple
 and complex thioarsenate building blocks.
;
_journal_issue                   21
_journal_name_full               'Inorganic chemistry'
_journal_page_first              8466
_journal_page_last               8468
_journal_paper_doi               10.1021/ic701067r
_journal_volume                  46
_journal_year                    2007
_chemical_formula_sum            'As4 Eu6 S16'
_chemical_formula_weight         1724.40
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           167
_symmetry_space_group_name_Hall  '-R 3 2"c'
_symmetry_space_group_name_H-M   'R -3 c :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                   9.254(3)
_cell_length_b                   9.254(3)
_cell_length_c                   27.698(12)
_cell_measurement_temperature    293(2)
_cell_volume                     2054.2(13)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.938
_diffrn_measured_fraction_theta_max 0.938
_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  0.0199
_diffrn_reflns_av_sigmaI/netI    0.0172
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            1834
_diffrn_reflns_theta_full        28.26
_diffrn_reflns_theta_max         28.26
_diffrn_reflns_theta_min         2.94
_exptl_absorpt_coefficient_mu    19.540
_exptl_crystal_density_diffrn    4.182
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             2298
_refine_diff_density_max         0.939
_refine_diff_density_min         -1.819
_refine_diff_density_rms         0.257
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     21
_refine_ls_number_reflns         541
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0272
_refine_ls_R_factor_gt           0.0238
_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^)+(0.0377P)^2^+2.1985P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0580
_refine_ls_wR_factor_ref         0.0598
_reflns_number_gt                492
_reflns_number_total             541
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic701067r-file004.cif
_cod_data_source_block           eu3as2s8
_cod_database_code               4339535