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dc.contributor.advisor Hwu, Shiou-Jyh
dc.creatorCarroll, Richard Irwin
dc.date.accessioned 2009-06-04T00:00:22Z
dc.date.available 2009-06-04T00:00:22Z
dc.date.issued 1993
dc.identifier.urihttps://hdl.handle.net/1911/13703
dc.description.abstract Investigation into the synthesis of reduced transition metal phosphates has led to the formation of two novel pseudo-ternary vanadium (III) phosphate compounds, each of which exhibits empty channels within the lattice. $\beta$-BaV$\sb2$(P$\sb2$O$\sb7)\sb2$ crystallizes in the P-1 (No. 2) space group with a = 6.269(1)A, b = 7.864(3)A, c = 6.1592(9)A, $\alpha$ = 101.34(2)$\sp\circ$, $\beta$ = 105.84(1)$\sp\circ$, and $\gamma$ = 96.51(2)$\sp\circ$ and exhibits three channels, two empty (one two-dimensional and one one-dimensional) and one occupied by the barium cation (three-dimensional). This compound is believed to be a high temperature phase. Ba$\sb3$V$\sb6$(PO$\sb4)\sb8$ crystallizes in the P2/c (No. 14) space group with a = 8.969(6)A, b = 9.907(5)A, c = 14.470(4)A, and $\beta$ = 104.26(3)$\sp\circ$. This structure also exhibits an empty, pentagonal-shaped channel visible along the a axis. In addition, the two barium sites form unusual corner sharing polyhedra through oxygen 16. Edge sharing of V(2)O$\sb6$ and P(2)O$\sb4$ polyhedra results in a structure distortion to avoid a short V-P distance. These structures appear stable through a wide temperature range.
dc.format.extent 123 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectInorganic chemistry
dc.title Synthesis and structural characterization of two new reduced barium vanadium (III) phosphates: Beta-barium vanadium(2)(phosphorus(2)oxygen(7))(2) and barium(3)vanadium(6)(phosphorus oxygen(4))(8)
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Chemistry
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Arts
dc.identifier.citation Carroll, Richard Irwin. "Synthesis and structural characterization of two new reduced barium vanadium (III) phosphates: Beta-barium vanadium(2)(phosphorus(2)oxygen(7))(2) and barium(3)vanadium(6)(phosphorus oxygen(4))(8)." (1993) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13703.


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