THE NIOBIUM PHOSPHATE BRONZE K5-XNB8P5O34, A NEW TUNNEL STRUCTURE, FIRST MEMBER OF THE SERIES (K3NB6P4O26)N.KNB2PO8

被引：21

作者：

BENABBAS, A ^{[1
]}

BOREL, MM ^{[1
]}

GRANDIN, A ^{[1
]}

LECLAIRE, A ^{[1
]}

RAVEAU, B ^{[1
]}

机构：

[1] UNIV CAEN,ISMRA,CRISMAT,CRISTALLOG & SCI MAT LAB,CNRS,URA 1318,CAMPUS 2,F-14032 CAEN,FRANCE

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1990年 / 87卷 / 02期

关键词：

D O I：

10.1016/0022-4596(90)90038-Y

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new niobium phosphate bronze K5-xNb8P5O34 has been isolated. The structure of this phase has been determined from a single crystal of composition K4Nb8P5O34 by X-ray diffraction. It crystallizes in the space group P2 c with a = 13.904 (6) Å, b = 6.453 (3) Å, c = 20.64 (1) Å, β = 125.05° (1). This structure consists of [Nb3P2O13]∞ layers parallel to (100) linked through PO4 tetrahedra and [Nb2O11] units. The structural relationships between this bronze and the other members of the series (K3Nb6 P4O26)nKNb2PO8 are discussed. Attention is drawn to the fact that for this particular n = 1 value two structural forms can be expected. © 1990.

引用

页码：360 / 365

页数：6

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