data_global
_amcsd_formula_title 'K(NpO2)(PO4)(H2O)3'
loop_
_publ_author_name
'Forbes T Z'
'Burns P C'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 45 
_journal_year 2007
_journal_page_first 471
_journal_page_last 477
_publ_section_title
;
 The crystal structures of X(NpO2)(PO4)(H2O)3 (X = K+, Na+, Rb+, NH4+) and
 their relationship to the autunite group
 Sample: KP1
;
_database_code_amcsd 0006146
_chemical_formula_sum 'K Np P O9 H6'
_cell_length_a 6.9564
_cell_length_b 6.9564
_cell_length_c 17.826
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 862.627
_exptl_crystal_density_diffrn      3.520
_symmetry_space_group_name_H-M 'P 4/n c c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-y,1/2-x,1/2+z'
  '1/2+y,1/2+x,1/2-z'
  '1/2+y,-x,-z'
  '1/2-y,x,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '1/2+x,1/2+y,-z'
  '1/2-x,1/2-y,z'
  'y,x,1/2+z'
  '-y,-x,1/2-z'
  '-y,1/2+x,-z'
  'y,1/2-x,z'
  '1/2-x,y,1/2+z'
  '1/2+x,-y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
K   0.84200   0.03100   0.41830   0.25000   0.06200
Np   0.25000   0.25000   0.29830   1.00000   0.01700
P   0.75000   0.25000   0.25000   1.00000   0.01800
O1   0.25000   0.25000   0.39540   1.00000   0.02500
O2   0.25000   0.25000   0.19930   1.00000   0.02800
O3   0.68400   0.02300   0.44180   1.00000   0.04400
Wat4   0.77740   0.07550   0.19820   0.75000   0.02500