data_global
_amcsd_formula_title 'Al0.8 K5 Nb7.2 O34 P5'
loop_
_publ_author_name
'Leclaire A'
'Guerioune M'
'Borel M'
'Grandin A'
'Raveau B'
_journal_name_full 'European Journal of Solid State and Inorganic Chemistry'
_journal_volume 29 
_journal_year 1992
_journal_page_first 473
_journal_page_last 483
_publ_section_title
;
 Insertion of potassium in the alpha-K4Nb8P5O34 structure: the
 niobium phosphates alpha-K5Nb8-xMxP5O34
 _cod_database_code 1001507
;
_database_code_amcsd 0012555
_chemical_formula_sum 'Nb7.2 Al.8 P5 K5 O34'
_cell_length_a 13.747
_cell_length_b 6.446
_cell_length_c 20.588
_cell_angle_alpha 90
_cell_angle_beta 124.94
_cell_angle_gamma 90
_cell_volume 1495.529
_exptl_crystal_density_diffrn      3.519
_symmetry_space_group_name_H-M 'P 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,-y,1/2+z'
  '-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
Nb1   0.19990  -0.02530   0.06760   0.37800
Al1   0.19990  -0.02530   0.06760   0.04200
Nb2   0.15130  -0.01670   0.05410   0.52200
Al2   0.15130  -0.01670   0.05410   0.05800
Nb3   0.24595   0.00000   0.26820   0.90000
Al3   0.24595   0.00000   0.26820   0.10000
Nb4   0.54590   0.78210   0.35557   0.90000
Al4   0.54590   0.78210   0.35557   0.10000
Nb5   0.75210   0.77550   0.56867   0.90000
Al5   0.75210   0.77550   0.56867   0.10000
P1   0.00000   0.15510   0.25000   1.00000
P2   0.21950   0.49550   0.05190   1.00000
P3   0.30680   0.49990   0.31960   1.00000
K1   0.50000   0.28180   0.25000   1.00000
K2   0.42790   0.74030   0.52210   1.00000
K3   0.00460   0.65900   0.13570   0.62000
K4   0.04100   0.52300   0.12970   0.38000
O1   0.00000   0.00000   0.00000   1.00000
O2   0.19390  -0.01700   0.16380   1.00000
O3   0.34940  -0.01700   0.12290   1.00000
O4   0.17480  -0.05100  -0.03300   1.00000
O5   0.17120   0.28500   0.05690   1.00000
O6   0.14840   0.66800   0.06010   1.00000
O7   0.40980  -0.03200   0.31950   1.00000
O8   0.27740   0.03600   0.37960   1.00000
O9   0.07300   0.01800   0.23240   1.00000
O10   0.24920   0.31300   0.26420   1.00000
O11   0.22740   0.68900   0.27500   1.00000
O12   0.60320   0.78300   0.47130   1.00000
O13   0.43150   0.53200   0.34130   1.00000
O14   0.64710   0.51300   0.38280   1.00000
O15   0.50000   0.73400   0.25000   1.00000
O16   0.68390   0.53700   0.60380   1.00000
O17   0.80070   0.51300   0.53000   1.00000
O18   0.91660   0.70700   0.67610   1.00000