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Nb(1.30)Cr(0.70)S(5): a layered ternary mixed-metal sulfide.

Yun H, Kim G - Acta Crystallogr Sect E Struct Rep Online (2008)

Bottom Line: One of the two metal sites is occupied by statistically disordered Nb and Cr atoms, with 0.3 and 0.7 occupancy, respectively.The chains are connected along the c axis, forming two-dimensional layers, which then stack on top of each other to complete the three dimensional structure.As a result, an undulating van der Waals gap is found between the layers.

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Affiliation: Division of Energy Systems Research and Department of Chemistry, Ajou University, Suwon 443-749, Republic of Korea.

ABSTRACT
The new layered ternary sulfide, Nb(1.30)Cr(0.70)S(5), niobium chromium penta-sulfide, is isostructural with the solid solution Nb(1+x)V(1-x)S(5) and belongs to the FeNb(3)Se(10) structure type. Each layer is composed of two unique chains of face-sharing [NbS(8)] bicapped trigonal prisms (m symmetry) and edge-sharing [MS(6)] (M= Nb, Cr) octa-hedra (m symmetry). One of the two metal sites is occupied by statistically disordered Nb and Cr atoms, with 0.3 and 0.7 occupancy, respectively. The chains are connected along the c axis, forming two-dimensional layers, which then stack on top of each other to complete the three dimensional structure. As a result, an undulating van der Waals gap is found between the layers.

No MeSH data available.


A perspective view of Nb1.30Cr0.70S5 down the b axis showing the stacking of the layers. The M site is occupied by statistically disordered Nb(30%) and Cr(70%) atoms. Filled, gray, and open circles represent Nb, M(Nb or Cr), and S atoms, repectively. Displacement ellipsoids are drawn at the 90% probability level. [Symmetry code: (i) 1 - x, 1/2 + y, 1 - z.]
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Fap1: A perspective view of Nb1.30Cr0.70S5 down the b axis showing the stacking of the layers. The M site is occupied by statistically disordered Nb(30%) and Cr(70%) atoms. Filled, gray, and open circles represent Nb, M(Nb or Cr), and S atoms, repectively. Displacement ellipsoids are drawn at the 90% probability level. [Symmetry code: (i) 1 - x, 1/2 + y, 1 - z.]


Nb(1.30)Cr(0.70)S(5): a layered ternary mixed-metal sulfide.

Yun H, Kim G - Acta Crystallogr Sect E Struct Rep Online (2008)

A perspective view of Nb1.30Cr0.70S5 down the b axis showing the stacking of the layers. The M site is occupied by statistically disordered Nb(30%) and Cr(70%) atoms. Filled, gray, and open circles represent Nb, M(Nb or Cr), and S atoms, repectively. Displacement ellipsoids are drawn at the 90% probability level. [Symmetry code: (i) 1 - x, 1/2 + y, 1 - z.]
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2967842&req=5

Fap1: A perspective view of Nb1.30Cr0.70S5 down the b axis showing the stacking of the layers. The M site is occupied by statistically disordered Nb(30%) and Cr(70%) atoms. Filled, gray, and open circles represent Nb, M(Nb or Cr), and S atoms, repectively. Displacement ellipsoids are drawn at the 90% probability level. [Symmetry code: (i) 1 - x, 1/2 + y, 1 - z.]
Bottom Line: One of the two metal sites is occupied by statistically disordered Nb and Cr atoms, with 0.3 and 0.7 occupancy, respectively.The chains are connected along the c axis, forming two-dimensional layers, which then stack on top of each other to complete the three dimensional structure.As a result, an undulating van der Waals gap is found between the layers.

View Article: PubMed Central - HTML - PubMed

Affiliation: Division of Energy Systems Research and Department of Chemistry, Ajou University, Suwon 443-749, Republic of Korea.

ABSTRACT
The new layered ternary sulfide, Nb(1.30)Cr(0.70)S(5), niobium chromium penta-sulfide, is isostructural with the solid solution Nb(1+x)V(1-x)S(5) and belongs to the FeNb(3)Se(10) structure type. Each layer is composed of two unique chains of face-sharing [NbS(8)] bicapped trigonal prisms (m symmetry) and edge-sharing [MS(6)] (M= Nb, Cr) octa-hedra (m symmetry). One of the two metal sites is occupied by statistically disordered Nb and Cr atoms, with 0.3 and 0.7 occupancy, respectively. The chains are connected along the c axis, forming two-dimensional layers, which then stack on top of each other to complete the three dimensional structure. As a result, an undulating van der Waals gap is found between the layers.

No MeSH data available.