[Mn2(AsS4)4]8- and [Cd2(AsS4)2(AsS5)2]8-: Discrete Clusters with High Negative Charge from Alkali Metal Polythioarsenate Fluxes
Ratnasabapathy G. Iyer; Mercouri G. Kanatzidis; Inorganic Chemistry 43 (2004) 3656–3662; doi:10.1021/ic049905u

data_4311128
_publ_section_title
;
 [Mn2(AsS4)4]8- and [Cd2(AsS4)2(AsS5)2]8-: Discrete Clusters with High
 Negative Charge from Alkali Metal Polythioarsenate Fluxes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              3656
_journal_page_last               3662
_journal_paper_doi               10.1021/ic049905u
_journal_volume                  43
_journal_year                    2004
_chemical_formula_sum            'As2 Mn Rb4 S8'
_chemical_formula_weight         803.14
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                105.958(7)
_cell_angle_beta                 103.950(5)
_cell_angle_gamma                92.612(6)
_cell_formula_units_Z            2
_cell_length_a                   9.079(3)
_cell_length_b                   9.197(3)
_cell_length_c                   11.219(4)
_cell_measurement_temperature    293(2)
_cell_volume                     867.8(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.914
_diffrn_measured_fraction_theta_max 0.914
_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  0.0198
_diffrn_reflns_av_sigmaI/netI    0.0269
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            8668
_diffrn_reflns_theta_full        28.24
_diffrn_reflns_theta_max         28.24
_diffrn_reflns_theta_min         1.96
_exptl_absorpt_coefficient_mu    16.620
_exptl_crystal_density_diffrn    3.074
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             734
_refine_diff_density_max         0.713
_refine_diff_density_min         -0.465
_refine_diff_density_rms         0.114
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     145
_refine_ls_number_reflns         3921
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0298
_refine_ls_R_factor_gt           0.0227
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0310P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0541
_refine_ls_wR_factor_ref         0.0558
_reflns_number_gt                3327
_reflns_number_total             3921
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic049905usi20040123_095251_2.cif
_cod_data_source_block           293c0x
_cod_database_code               4311128