Crystal chemistry of ultraphosphates

An orthorhombic polymorph of cerium(III) ultraphosphate, CeP5O14

“…For applications of rare-earth ultraphosphates, see: Cole et al (2000); Katrusiak & Kaczmarek (1995); Kobayashi et al (1976); Schulz et al (1974). For a discussion of structure types in this chemical system, see: Averbuch-Pouchot & Durif (1992). For the triclinic polymorph of CeP 5 O 14 , see: Rzaigui et al (1984).…”

“…. These compounds can be generally classified into four structure types: monoclinic (P2 1 /a), monoclinic (C2/c), orthorhombic (Pnma), and triclinic (P1) (Averbuch-Pouchot & Durif, 1992). In this chemical system, many of the compounds are isotypic, and some are polymorphic.…”

Spectral Investigation of Crystalline (CuHPO4, Cu2P4O12,and Cu2P8O22) and Glassy Copper Phosphates

“…The new structure of CuHPO 4 does belong to this group [3]. The copper polyphosphates with a molar ratio of Cu/P < 1 are much less numerous, for example, the metaphosphate Cu 2 P 4 O 12 and the ultraphosphate Cu 2 P 8 O 22 [4,[6][7][8][9].…”

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“…Condensed compoundsin fact so called new inorganic polymers -are predestined to play an even greater role in our "high-tech" society in the future than they have in the past. This conclusion is based upon the trend of increasing applications resulting from the electronic structures of these materials that lead to their unusual optical, magnetic, electrical and chemical properties so adaptable to the demands now being placed on materials [1][2][3][4]. Starting from the avant-gardist studies of researchers a lot of number of condensed compoundsinorganic polymers was synthesised in the world.…”

“…A great number very interesting and innovative researches in the field of phosphate's chemistry, mainly in the domain of chemistry of condensed phosphates of Rare Earths and other tri-and polyvalent metals has begun in the nineteenth and twentieth centuries [1][2]. The German school of chemistry has been very dynamic and influential in the domain of phosphates.…”