NaRb4[(WN2.5O0.5)2] and NaCs4[(WN2.5O0.5)2], the first oxo nitrido tungstates(VI) with infinite chains ∞1[WX2X2/22.5-] with X≙N, O

R. Niewa; H. Jacobs

NaRb4[(WN_2.5O_0.5)₂] and NaCs₄[(WN_2.5O_0.5)₂], the first oxo nitrido tungstates(VI) with infinite chains _∞¹[WX₂X_2/2^2.5-] with X≙N, O

R. Niewa, H. Jacobs

pro3dure medical GmbH

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

8 Scopus citations

Abstract

Orange crystals of NaRb₄[(WN_2.5O_0.5)₂] and NaCs₄[(WN_2.5O_0.5)₂] were obtained by the reaction of stoichiometric mixtures of WO₃, tungsten powder and sodium amide with an excess of rubidium amide or cesium amide, resp., in autoclaves at 600°C. The compounds crystallize orthorhombic in the space group Ibam (Z = 4) with the unit cell parameters: NaRb₄[(WN_2.5O_0.5)₂] a = 7.193(1) Å, b = 23.138(4) Å and c = 6.209(2) Å and NaCs₄[(WN_2.5O_0.5)₂]: a = 7.430(1) Å, b = 24.318(3) Å, c = 6.261(2) Å. The crystal structures contain chains of corner sharing tetrahedra of ligands around tungsten _∞¹[WX₂X_2/2^2.5-] (X = O,N). Two of these chains are linked by sodium atoms to double chains. These double chains form the motif of a hexagonal rod packing. The rubidium and cesium atoms resp., connect the chains three-dimensionally.

Original language	English
Pages (from-to)	463-470
Number of pages	8
Journal	European Journal of Solid State and Inorganic Chemistry
Volume	33
Issue number	5
State	Published - 1996
Externally published	Yes

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@article{4ad1e9294620482899a7d2fb43474207,

title = "NaRb4[(WN2.5O0.5)2] and NaCs4[(WN2.5O0.5)2], the first oxo nitrido tungstates(VI) with infinite chains ∞1[WX2X2/22.5-] with X≙N, O",

abstract = "Orange crystals of NaRb4[(WN2.5O0.5)2] and NaCs4[(WN2.5O0.5)2] were obtained by the reaction of stoichiometric mixtures of WO3, tungsten powder and sodium amide with an excess of rubidium amide or cesium amide, resp., in autoclaves at 600°C. The compounds crystallize orthorhombic in the space group Ibam (Z = 4) with the unit cell parameters: NaRb4[(WN2.5O0.5)2] a = 7.193(1) {\AA}, b = 23.138(4) {\AA} and c = 6.209(2) {\AA} and NaCs4[(WN2.5O0.5)2]: a = 7.430(1) {\AA}, b = 24.318(3) {\AA}, c = 6.261(2) {\AA}. The crystal structures contain chains of corner sharing tetrahedra of ligands around tungsten ∞1[WX2X2/22.5-] (X = O,N). Two of these chains are linked by sodium atoms to double chains. These double chains form the motif of a hexagonal rod packing. The rubidium and cesium atoms resp., connect the chains three-dimensionally.",

author = "R. Niewa and H. Jacobs",

year = "1996",

language = "English",

volume = "33",

pages = "463--470",

journal = "European Journal of Solid State and Inorganic Chemistry",

issn = "0992-4361",

publisher = "Elsevier Masson s.r.l.",

number = "5",

}

TY - JOUR

T1 - NaRb4[(WN2.5O0.5)2] and NaCs4[(WN2.5O0.5)2], the first oxo nitrido tungstates(VI) with infinite chains ∞1[WX2X2/22.5-] with X≙N, O

AU - Niewa, R.

AU - Jacobs, H.

PY - 1996

Y1 - 1996

N2 - Orange crystals of NaRb4[(WN2.5O0.5)2] and NaCs4[(WN2.5O0.5)2] were obtained by the reaction of stoichiometric mixtures of WO3, tungsten powder and sodium amide with an excess of rubidium amide or cesium amide, resp., in autoclaves at 600°C. The compounds crystallize orthorhombic in the space group Ibam (Z = 4) with the unit cell parameters: NaRb4[(WN2.5O0.5)2] a = 7.193(1) Å, b = 23.138(4) Å and c = 6.209(2) Å and NaCs4[(WN2.5O0.5)2]: a = 7.430(1) Å, b = 24.318(3) Å, c = 6.261(2) Å. The crystal structures contain chains of corner sharing tetrahedra of ligands around tungsten ∞1[WX2X2/22.5-] (X = O,N). Two of these chains are linked by sodium atoms to double chains. These double chains form the motif of a hexagonal rod packing. The rubidium and cesium atoms resp., connect the chains three-dimensionally.

AB - Orange crystals of NaRb4[(WN2.5O0.5)2] and NaCs4[(WN2.5O0.5)2] were obtained by the reaction of stoichiometric mixtures of WO3, tungsten powder and sodium amide with an excess of rubidium amide or cesium amide, resp., in autoclaves at 600°C. The compounds crystallize orthorhombic in the space group Ibam (Z = 4) with the unit cell parameters: NaRb4[(WN2.5O0.5)2] a = 7.193(1) Å, b = 23.138(4) Å and c = 6.209(2) Å and NaCs4[(WN2.5O0.5)2]: a = 7.430(1) Å, b = 24.318(3) Å, c = 6.261(2) Å. The crystal structures contain chains of corner sharing tetrahedra of ligands around tungsten ∞1[WX2X2/22.5-] (X = O,N). Two of these chains are linked by sodium atoms to double chains. These double chains form the motif of a hexagonal rod packing. The rubidium and cesium atoms resp., connect the chains three-dimensionally.

UR - http://www.scopus.com/inward/record.url?scp=0039159283&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0039159283

SN - 0992-4361

VL - 33

SP - 463

EP - 470

JO - European Journal of Solid State and Inorganic Chemistry

JF - European Journal of Solid State and Inorganic Chemistry

IS - 5

ER -

NaRb4[(WN_2.5O_0.5)₂] and NaCs₄[(WN_2.5O_0.5)₂], the first oxo nitrido tungstates(VI) with infinite chains _∞¹[WX₂X_2/2^2.5-] with X≙N, O

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