Two Hydrous Divalent-Metal Diarsenates

Wu, C.-H.; Chen, T.-C.; Wang, S.-L.

doi:10.1107/S0108270195016350

Two Hydrous Divalent-Metal Diarsenates

Two new hydrous diarsenates, Mg₂As₂O₇.2H₂O (dimagnesium diarsenic heptaoxide dihydrate) and Zn₂As₂O₇2H₂O (dizinc diarsenic heptaoxide dihydrate), have been synthesized. The two compounds are isotypic. Their frameworks are characterized by zigzag infinite chains of edge-sharing MO₆ octahedra linked by As₂O₇ groups to form a three-dimensional architecture with intersecting tunnels. Water O atoms are tightly bound to Mg or Zn atoms with the H atoms directed into the tunnels. Both the MO₆ octahedra and the AsO₄ tetrahedra are more distorted in the Zinc compound than in the magnesium compound.

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Format		BIBTeX
		EndNote
		RefMan
		Refer
		Medline
		CIF
		SGML
		Text
		Plain Text

Format		BIBTeX
		EndNote
		RefMan
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		CIF
		SGML
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		Plain Text

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Two Hydrous Divalent-Metal Diarsenates

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	Crystallographic Information File (CIF) Contains datablocks global, I, II
	Structure factor file (CIF format) Contains datablock I
	Structure factor file (CIF format) Contains datablock Zn2As2O7(H2O)2