Two three-dimensional {V 16Ge 4}-based open frameworks stabilized by diverse types of Co II-amine bridges and magnetic properties

Yuanzhe Gao; Yanqing Xu; Kunlin Huang; Zhangang Han; Changwen Hu

doi:10.1039/c2dt30199g

Two three-dimensional {V ₁₆Ge ₄}-based open frameworks stabilized by diverse types of Co ^II-amine bridges and magnetic properties

Yuanzhe Gao, Yanqing Xu^*, Kunlin Huang, Zhangang Han, Changwen Hu

^*Corresponding author for this work

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

23 Citations (Scopus)

Abstract

Two novel three-dimensional (3D) extended vanadogermanate-based frameworks, [Co(pdn) ₂] ₃[Co ₂(pdn) ₄][V ₁₆Ge ₄O ₄₄(OH) ₂(H ₂O)] ·5H ₂O (1), [Co ₂(en) ₃][Co(en) ₂] ₂[Co(en) ₂(H ₂O)][V ₁₆Ge ₄O ₄₄(OH) ₂(H ₂O)] ·10.5H ₂O (2), (pdn = 1,2-propanediamine, en = ethylenediamine) have been synthesized under hydrothermal conditions via changing the organic amine. X-ray crystal structure analyses reveal that both frameworks are built of [V ₁₆Ge ₄O ₄₄(OH) ₂(H ₂O)] ^10- anions and different Co-amine cations. They represent the first example of incorporating elemental Co into the extended vanadogermanate frameworks. Compound 1 shows a 3D framework with NaCl topology based on {V ₁₆Ge ₄} clusters as nodes, while compound 2 exhibits a 3D (4,6)-connected network with a Schläfli symbol of (4 ⁶·6 ⁷·8 ²) ₂(4 ²·6 ⁴), which is found for the first time in polyoxovanadate chemistry. The diverse types of metal-organoamine subunits play critical roles in the formation on the final structures. Furthermore, variable temperature susceptibility measurements on compounds 1 and 2 demonstrate the presence of anticipated rare ferrimagnetic behavior.

Original language	English
Pages (from-to)	6122-6129
Number of pages	8
Journal	Dalton Transactions
Volume	41
Issue number	20
DOIs	https://doi.org/10.1039/c2dt30199g
Publication status	Published - 28 May 2012
Externally published	Yes

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title = "Two three-dimensional \{V 16Ge 4\}-based open frameworks stabilized by diverse types of Co II-amine bridges and magnetic properties",

abstract = "Two novel three-dimensional (3D) extended vanadogermanate-based frameworks, [Co(pdn) 2] 3[Co 2(pdn) 4][V 16Ge 4O 44(OH) 2(H 2O)] ·5H 2O (1), [Co 2(en) 3][Co(en) 2] 2[Co(en) 2(H 2O)][V 16Ge 4O 44(OH) 2(H 2O)] ·10.5H 2O (2), (pdn = 1,2-propanediamine, en = ethylenediamine) have been synthesized under hydrothermal conditions via changing the organic amine. X-ray crystal structure analyses reveal that both frameworks are built of [V 16Ge 4O 44(OH) 2(H 2O)] 10- anions and different Co-amine cations. They represent the first example of incorporating elemental Co into the extended vanadogermanate frameworks. Compound 1 shows a 3D framework with NaCl topology based on \{V 16Ge 4\} clusters as nodes, while compound 2 exhibits a 3D (4,6)-connected network with a Schl{\"a}fli symbol of (4 6·6 7·8 2) 2(4 2·6 4), which is found for the first time in polyoxovanadate chemistry. The diverse types of metal-organoamine subunits play critical roles in the formation on the final structures. Furthermore, variable temperature susceptibility measurements on compounds 1 and 2 demonstrate the presence of anticipated rare ferrimagnetic behavior.",

author = "Yuanzhe Gao and Yanqing Xu and Kunlin Huang and Zhangang Han and Changwen Hu",

year = "2012",

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T1 - Two three-dimensional {V 16Ge 4}-based open frameworks stabilized by diverse types of Co II-amine bridges and magnetic properties

AU - Gao, Yuanzhe

AU - Xu, Yanqing

AU - Huang, Kunlin

AU - Han, Zhangang

AU - Hu, Changwen

PY - 2012/5/28

Y1 - 2012/5/28

N2 - Two novel three-dimensional (3D) extended vanadogermanate-based frameworks, [Co(pdn) 2] 3[Co 2(pdn) 4][V 16Ge 4O 44(OH) 2(H 2O)] ·5H 2O (1), [Co 2(en) 3][Co(en) 2] 2[Co(en) 2(H 2O)][V 16Ge 4O 44(OH) 2(H 2O)] ·10.5H 2O (2), (pdn = 1,2-propanediamine, en = ethylenediamine) have been synthesized under hydrothermal conditions via changing the organic amine. X-ray crystal structure analyses reveal that both frameworks are built of [V 16Ge 4O 44(OH) 2(H 2O)] 10- anions and different Co-amine cations. They represent the first example of incorporating elemental Co into the extended vanadogermanate frameworks. Compound 1 shows a 3D framework with NaCl topology based on {V 16Ge 4} clusters as nodes, while compound 2 exhibits a 3D (4,6)-connected network with a Schläfli symbol of (4 6·6 7·8 2) 2(4 2·6 4), which is found for the first time in polyoxovanadate chemistry. The diverse types of metal-organoamine subunits play critical roles in the formation on the final structures. Furthermore, variable temperature susceptibility measurements on compounds 1 and 2 demonstrate the presence of anticipated rare ferrimagnetic behavior.

AB - Two novel three-dimensional (3D) extended vanadogermanate-based frameworks, [Co(pdn) 2] 3[Co 2(pdn) 4][V 16Ge 4O 44(OH) 2(H 2O)] ·5H 2O (1), [Co 2(en) 3][Co(en) 2] 2[Co(en) 2(H 2O)][V 16Ge 4O 44(OH) 2(H 2O)] ·10.5H 2O (2), (pdn = 1,2-propanediamine, en = ethylenediamine) have been synthesized under hydrothermal conditions via changing the organic amine. X-ray crystal structure analyses reveal that both frameworks are built of [V 16Ge 4O 44(OH) 2(H 2O)] 10- anions and different Co-amine cations. They represent the first example of incorporating elemental Co into the extended vanadogermanate frameworks. Compound 1 shows a 3D framework with NaCl topology based on {V 16Ge 4} clusters as nodes, while compound 2 exhibits a 3D (4,6)-connected network with a Schläfli symbol of (4 6·6 7·8 2) 2(4 2·6 4), which is found for the first time in polyoxovanadate chemistry. The diverse types of metal-organoamine subunits play critical roles in the formation on the final structures. Furthermore, variable temperature susceptibility measurements on compounds 1 and 2 demonstrate the presence of anticipated rare ferrimagnetic behavior.

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Two three-dimensional {V ₁₆Ge ₄}-based open frameworks stabilized by diverse types of Co ^II-amine bridges and magnetic properties

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