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Structural and spectroscopic study of Mg13.4(OH)6(HVO4)2(H0.2VO4)6

✍ Scribed by T. Đorđević; Lj. Karanović; E. Tillmanns

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
297 KB
Volume
43
Category
Article
ISSN
0232-1300

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✦ Synopsis

Single-crystals of the polar compound magnesium hydrogen vanadate(V), Mg 13.4 (OH) 6 (HVO 4 ) 2 (H 0.2 VO 4 ) 6 , were synthesized hydrothermally. It represents the first hydrogen vanadate(V) among inorganic compounds. Its structure was determined by single-crystal X-ray diffraction [space group P6 3 mc, a = 12.9096(2), c = 5.0755(1) Å, V = 732.55(2) ų, Z = 1]. The crystal structure of Mg 13.4 (OH) 6 (HVO 4 ) 2 (H 0.2 VO 4 ) 6 consists of well separated, vacancy-interrupted chains of face sharing Mg2O 6 octahedra, with short Mg2-Mg2 distances of 2.537(1) Å, embedded in a porous magnesium vanadate 3D framework having the topology of the zeolite cancrinite. All three hydrogen positions in the structure were confirmed by FTIR spectroscopy. Dedicated to Prof. Ladislav Bohatý on the occasion of his 60 th birthday

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