data_3000012
loop_
_publ_author_name
'Armel Le Bail'
'Thomas Hansen'
'Wilson A. Crichton'
'Andrew N. Fitch'
_publ_section_title
;
 Tetrapotassium pyrophosphates gamma and delta-K4P2O7
;
_journal_name_full               'To be published in Powder Diffraction'
_diffrn_ambient_temperature      870
_cell_measurement_temperature    870
_chemical_name_common            'tetrapotassium pyrophosphate'
_chemical_formula_sum            'K4 O7 P2'
_cell_length_a                   6.0117(4)
_cell_length_b                   6.0117(4)
_cell_length_c                   14.6215(9)
_cell_angle_alpha                90.00000
_cell_angle_beta                 90.00000
_cell_angle_gamma                120.00000
_cell_volume                     457.63(5)
_refine_ls_r_i_factor            3.21
_cod_hold_until_date             2012-09-30
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
? ? ? ?