#------------------------------------------------------------------------------
#$Date: 2008-01-13 22:15:36 +0000 (Sun, 13 Jan 2008) $
#$Revision: 14 $
#$URL: svn://www.crystallography.net/cod/cif/2/2004958.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_2004958
_journal_name_full  'Acta Crystallographica'
_journal_year       1996
_journal_volume    	C52
_journal_page_first    	1326
_journal_page_last    	1329
_publ_section_title    	
;
Two Hydrous Divalent-Metal Diarsenates
;
_chemical_formula_iupac    	'Zn2 As2 O7 , 2H2 O'
_chemical_formula_moiety    	'Zn2 As2 O7 (H2 O)2'
_chemical_formula_sum    	'As2 H4 O9 Zn2'
_chemical_formula_weight    	428.6
_symmetry_cell_setting    	'Monoclinic'
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-1/2+x,1/2-y,1/2+z
-x,-y,-z
_symmetry_space_group_name_H-M    	'P 21/n'
_cell_length_a    	6.496(21)
_cell_length_b    	14.211(6)
_cell_length_c    	7.628(4)
_cell_angle_alpha    	90
_cell_angle_beta    	93.91(4)
_cell_angle_gamma    	90
_cell_volume    	702.3(10)
_cell_formula_units_Z    	4
_exptl_crystal_density_diffrn    	4.025
_cell_measurement_temperature    	296
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Zn(1) -.0456(3) .2477(1) .6381(2) .022(1)
Zn(2) -.2617(3) .3867(1) .9155(2) .017(1)
As(1) .4436(2) .3139(1) .5532(1) .003(1)
As(2) .2390(2) .4189(1) .8449(1) .002(1)
O(1) .6547(14) .2880(6) .6840(10) .008(2)
O(2) .4838(13) .3453(6) .3500(10) .006(1)
O(3) .2660(13) .2314(6) .5751(9) .005(1)
O(4) .3357(14) .4172(5) .6399(10) .006(2)
O(5) .1835(14) .5319(5) .8723(10) .006(2)
O(6) .4311(13) .3721(5) .9739(10) .006(1)
O(7) .0282(13) .3512(5) .8346(9) .004(1)
O(8) -.0571(17) .3444(7) .4253(12) .019(3)
O(9) -.2565(16) .4960(7) .7390(13) .016(3)