data_2000245
_journal_name_full 'Acta Cryst. C'
_journal_year   1991
_journal_volume  47
_journal_page_first  1791
_journal_page_last  1794
loop_
_publ_author_name
 'Gougeon, P.'
 'Potel, M.'
 'Sergent, M.'
_chemical_formula_sum  'Mo 15 Se 19'
_chemical_formula_weight  2939.34
_symmetry_cell_setting  trigonal
_symmetry_space_group_name_H-M  'R -3 c {rhombohedral axes}'
_symmetry_space_group_name_Hall  '-P 3* 2n'
_cell_length_a  20.3600(10)
_cell_length_b  ?
_cell_length_c  ?
_cell_angle_alpha  26.9810(10)
_cell_angle_beta  90
_cell_angle_gamma  90
_cell_volume  1532.20(10)
_cell_formula_units_Z  2
_exptl_crystal_density_diffrn  6.371
_exptl_crystal_density_meas  ?
_exptl_crystal_F_000  2552
_exptl_absorpt_coefficient_mu  281.28
_diffrn_radiation_type  Mo
_diffrn_radiation_wavelength  0.71073
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
 Mo1 0.49818(4) 0.69255(4) 0.36968(4) ?
 Mo2 0.22468(4) 0.04038(4) 0.36761(4) ?
 Mo3 0.41300(10)
   0.0870(10)
   0.250 ?
 Se1 0.18482(4) 0.80685(4) 0.55594(4) ?
 Se2 0.54368(5) 0.91827(5) 0.18296(5) ?
 Se3 0.0641(2) 0.43590(10)
    0.75 ?
 Se4 0.44577(3) 0.44577(3) 0.44577(3) ?
 Se5 0.17689(3) 0.17689(3) 0.17689(3) ?