ChemInform Abstract: INTERCALATION OF WATER MOLECULES IN A LAYER STRUCTURE OF VANADYL PHOSPHATE. CRYSTAL STRUCTURE OF VANADYL PHOSPHATE DIHYDRATE‐D2

Abstract

Nach Neutronenbeugungsuntersuchungen baut sich die Titelverbin‐ dung aus [VOPOdm‐Schichten auf, zwischen die die beiden DzO‐Moleküle eingelagert sind.

Structure Analysis of Vanadyl Phosphate Intercalated with Acetone

“…The host structure was determined by Tietze (17) from single-crystal X-ray di!raction as a tetragonal, space group P4/nmm with a"6.202, c"7.41 A s and z"2. Tachez et al (18) presented the structure re"nement of the deuterated compound VOPO ) 2D O based on neutron powder di!raction data: space group P4/n, a"6.2154 (2), and c"7.4029(7) A s . The host structure of vanadyl phosphate dihydrate consists of sheets of distorted VO octahedra and PO tetahedra linked by shared oxygen atoms (see Fig.…”

A Study of the Hydration and Dehydration of Vanadyl Arsenate by X‐ray Diffraction Analysis, Infrared and Raman Spectroscopy

“…The crystal structure of this hydrate was studied by neutron powder diffraction techniques on VOPO 4 ⋅ 2 D 2 O. [6] It confirmed the apical position of the oxygen of the first water molecule in the VO 6 octahedron. The second water molecule was found to lie between two PO 4 tetrahedra of two different (VOPO 4 ) ϱ layers.…”

“…X-ray diffraction studies have established the structures of tetragonal forms of MOPO 4 [1][2][3] and MOAsO 4 , [4,5] which consist of chains of corner-sharing MO 6 octahedra running parallel to the c axis. In the xy plane, each MO 6 octahedron shares corners with four XO 4 tetrahedra, which link the octahedral chains to produce an (MOXO 4 ) ϱ layer.…”

Thermal Behavior of Tetrahydropyran‐Intercalated VOPO4: Structural and Dynamics Study

“…The atoms of vanadium and phosphorus are connected by oxygen atoms (O host ) of the phosphate groups. [1,2] Thus, every vanadium atom is surrounded by four equatorial oxygen atoms. In addition, two oxygen atoms are bonded to the vanadium atoms forming a VO 6 octahedron.…”

“…The lattice parameters of the tetragonal structure are a = 6.201(2) Å and c = 12.014(2) Å and the intercalate contains one THP molecule per formula unit. The probable arrangement of the THP molecules in the host interlayer space is derived from molecular simulations with the Cerius [2] 4.5 programme. The molecular simulations showed a bilayer arrangement of the THP molecules in the interlayer space, in which the guest layers are slightly overlapping.…”