NA4-XNB7P4O29 - A PHOSPHATE NIOBIUM BRONZE INTERGROWTH OF THE MEMBERS M = 3 AND M = 4 OF THE MPTBS SERIES NAX(NBO3)2M(PO2)4

被引：8

作者：

BENABBAS, A

LELIGNY, H

BOREL, MM

GRANDIN, A

LECLAIRE, A

RAVEAU, B

机构：

[1] Laboratoire CRISMAT-ISMRa, 14050 Caen Ce ́dex, Bd Mare ́chal Juin

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1992年 / 101卷 / 01期

关键词：

D O I：

10.1016/0022-4596(92)90209-E

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new niobium phosphate bronzeNa4-xNb7P4O29(0 ≤ x ≤ 1) has been isolated. It crystallizes in the space groupC2/c witha = 32.850(4), b = 5.3484(4), andc = 13.252(2)A °and β = 97.79(1)°. The structure was solved by X-ray diffraction on a twinned crystal with an (100) twinning plane. This oxide is an intergrowth of them = 3 andm = 4 members of the series of the monophosphate tungsten bronzes with pentagonal tunnels (MPTBp), corresponding to the formulation Nax(NbO3)2m(PO2)4. The ReO3 slabs alternate parallel to (100) and are linked by isolated PO4 tetrahedra delimiting pentagonal tunnels running alongb. Relationships with other niobium phosphate bronzes are also discussed. © 1992 Academic Press, Inc. All rights reserved.

引用

页码：137 / 144

页数：8

共 11 条

[1] NA2+XNB6P4O26 - A NOVEL NIOBIUM PHOSPHATE BRONZE ISOTYPIC OF THE M = 3 MEMBER OF THE MPTBP FAMILY [J].