New layered polyanion in α-CsB5O8 high-temperature modification

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New layered polyanion in α-CsB₅O₈ high-temperature modification. / Bubnova, Rimma S.; Fundamensky, Vladimir S.; Anderson, Julia E.; Filatov, Stanislav K.

In: Solid State Sciences, Vol. 4, No. 1, 2002, p. 87-91.

Research output: Contribution to journal › Article › peer-review

Author

Bubnova, Rimma S. ; Fundamensky, Vladimir S. ; Anderson, Julia E. ; Filatov, Stanislav K. / New layered polyanion in α-CsB₅O₈ high-temperature modification. In: Solid State Sciences. 2002 ; Vol. 4, No. 1. pp. 87-91.

BibTeX

@article{0cace3288e20480c88f3d21ea8a983f1,

title = "New layered polyanion in α-CsB5O8 high-temperature modification",

abstract = "Crystal structure of high-temperature polymorphic modification, α-CsB5O8, was determined from single-crystal X-ray diffraction data. The phase crystallizes in space group P21/c with a = 7.122(2), b = 9.640(3), c = 11.411(3) {\AA}, β = 116.64(2)° and V = 700.3(3) {\AA}3, Z = 4. It contains new zigzag layer polyanions built up from rigid [B5O8]- pentaborate groups that consist of four triangles and a tetrahedron condensed to a double ring via common tetrahedron. The cesium cations are located in large cavities of the layers and they are coordinated by nine oxygen atoms with distances from 3.037 to 3.429 {\AA}. Five of the oxygen atoms are placed in the same layer as cesium atom; other four ones are distributed between two adjacent layers. Under heating this structure demonstrates a highly anisotropic thermal expansion (α11 = 27, α22 = 61, α33 = -8 × 10-6 K-1); the thermal expansion in the direction perpendicular to the layer is the intermediate one.",

keywords = "Borates, Layered structure, Thermal expansion",

author = "Bubnova, {Rimma S.} and Fundamensky, {Vladimir S.} and Anderson, {Julia E.} and Filatov, {Stanislav K.}",

note = "Funding Information: We are very grateful to Dr. Irina G. Polyakova for growth of single crystals for the study. This research has been supported by the Russian Foundation for Basic Research (project No. 99-03-32524) and the Federal Program {\textquoteleft}Integration{\textquoteright} (grant No. A0146). J.E.A. thanks Central European section of Russian Academy of Natural Sciences for financial support. ",

year = "2002",

doi = "10.1016/S1293-2558(01)01194-3",

language = "English",

volume = "4",

pages = "87--91",

journal = "Solid State Sciences",

issn = "1293-2558",

publisher = "Elsevier",

number = "1",

}

RIS

TY - JOUR

T1 - New layered polyanion in α-CsB5O8 high-temperature modification

AU - Bubnova, Rimma S.

AU - Fundamensky, Vladimir S.

AU - Anderson, Julia E.

AU - Filatov, Stanislav K.

N1 - Funding Information: We are very grateful to Dr. Irina G. Polyakova for growth of single crystals for the study. This research has been supported by the Russian Foundation for Basic Research (project No. 99-03-32524) and the Federal Program ‘Integration’ (grant No. A0146). J.E.A. thanks Central European section of Russian Academy of Natural Sciences for financial support.

PY - 2002

Y1 - 2002

N2 - Crystal structure of high-temperature polymorphic modification, α-CsB5O8, was determined from single-crystal X-ray diffraction data. The phase crystallizes in space group P21/c with a = 7.122(2), b = 9.640(3), c = 11.411(3) Å, β = 116.64(2)° and V = 700.3(3) Å3, Z = 4. It contains new zigzag layer polyanions built up from rigid [B5O8]- pentaborate groups that consist of four triangles and a tetrahedron condensed to a double ring via common tetrahedron. The cesium cations are located in large cavities of the layers and they are coordinated by nine oxygen atoms with distances from 3.037 to 3.429 Å. Five of the oxygen atoms are placed in the same layer as cesium atom; other four ones are distributed between two adjacent layers. Under heating this structure demonstrates a highly anisotropic thermal expansion (α11 = 27, α22 = 61, α33 = -8 × 10-6 K-1); the thermal expansion in the direction perpendicular to the layer is the intermediate one.

AB - Crystal structure of high-temperature polymorphic modification, α-CsB5O8, was determined from single-crystal X-ray diffraction data. The phase crystallizes in space group P21/c with a = 7.122(2), b = 9.640(3), c = 11.411(3) Å, β = 116.64(2)° and V = 700.3(3) Å3, Z = 4. It contains new zigzag layer polyanions built up from rigid [B5O8]- pentaborate groups that consist of four triangles and a tetrahedron condensed to a double ring via common tetrahedron. The cesium cations are located in large cavities of the layers and they are coordinated by nine oxygen atoms with distances from 3.037 to 3.429 Å. Five of the oxygen atoms are placed in the same layer as cesium atom; other four ones are distributed between two adjacent layers. Under heating this structure demonstrates a highly anisotropic thermal expansion (α11 = 27, α22 = 61, α33 = -8 × 10-6 K-1); the thermal expansion in the direction perpendicular to the layer is the intermediate one.

KW - Borates

KW - Layered structure

KW - Thermal expansion

UR - http://www.scopus.com/inward/record.url?scp=0036182767&partnerID=8YFLogxK

U2 - 10.1016/S1293-2558(01)01194-3

DO - 10.1016/S1293-2558(01)01194-3

M3 - Article

VL - 4

SP - 87

EP - 91

JO - Solid State Sciences

JF - Solid State Sciences

SN - 1293-2558

IS - 1

ER -

ID: 5070656