Crystal structures of three anhydrous nitroprussides: M[Fe(CN) 5NO] (M=Mn,Zn,Cd)

J. Rodríguez-Hernández; E. Reguera; M. Mir; Y. P. Mascarenhas

doi:10.1154/1.2434787

Crystal structures of three anhydrous nitroprussides: M[Fe(CN) ₅NO] (M=Mn,Zn,Cd)

J. Rodríguez-Hernández, E. Reguera, M. Mir, Y. P. Mascarenhas

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

8 Scopus citations

Abstract

The crystal structures of Mn, Zn, and Cd nitroprussides in their anhydrous state, M[Fe(CN) 5 NO] (M=Mn,Zn,Cd), were refined from XRD powder patterns using the Rietveld method. These compounds have a porous framework useful for adsorption and storage of small molecules. Water crystallization can be removed by heating below 100 °C without disrupting the 3D network by introducing certain structural modification mainly around the M site (Mn, Zn, Cd). For M=Mn and Cd, the compounds were found to be orthorhombic with space group Pnma [Mn:a=13.7844(1), b=7.3750(2), c=10.9470(2) Å, V=1112.8(1) Å3, Z=4; Cd:a=13.9566(3), b=7.5040(4), c=11.0230(2) Å, V=1154.4(1) Å3, Z=4]. Anhydrous zinc nitroprusside crystallizes in rhombohedral with space group R 3- [a=b=19.2525(1),c=17.7107(2) Å,γ=120.0°,V=5685.1(1) Å3, Z=18]. When exposed to humid air, these anhydrous compounds become hydrated. The XRD powder patterns were recorded under vacuum on samples dehydrated in situ. The structural information from XRD was complemented with thermo-gravimetric, infrared, and Mössbauer data.

Original language	English
Pages (from-to)	40-46
Number of pages	7
Journal	Powder Diffraction
Volume	22
Issue number	1
DOIs	https://doi.org/10.1154/1.2434787
State	Published - 2007
Externally published	Yes

Keywords

Crystal structure
Nitroprusside
Porous material
Prussian blue analogues
Rietveld

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10.1154/1.2434787

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@article{75ddf9c5760249ad9d379da1869763b0,

title = "Crystal structures of three anhydrous nitroprussides: M[Fe(CN) 5NO] (M=Mn,Zn,Cd)",

abstract = "The crystal structures of Mn, Zn, and Cd nitroprussides in their anhydrous state, M[Fe(CN) 5 NO] (M=Mn,Zn,Cd), were refined from XRD powder patterns using the Rietveld method. These compounds have a porous framework useful for adsorption and storage of small molecules. Water crystallization can be removed by heating below 100 °C without disrupting the 3D network by introducing certain structural modification mainly around the M site (Mn, Zn, Cd). For M=Mn and Cd, the compounds were found to be orthorhombic with space group Pnma [Mn:a=13.7844(1), b=7.3750(2), c=10.9470(2) {\AA}, V=1112.8(1) {\AA}3, Z=4; Cd:a=13.9566(3), b=7.5040(4), c=11.0230(2) {\AA}, V=1154.4(1) {\AA}3, Z=4]. Anhydrous zinc nitroprusside crystallizes in rhombohedral with space group R 3- [a=b=19.2525(1),c=17.7107(2) {\AA},γ=120.0°,V=5685.1(1) {\AA}3, Z=18]. When exposed to humid air, these anhydrous compounds become hydrated. The XRD powder patterns were recorded under vacuum on samples dehydrated in situ. The structural information from XRD was complemented with thermo-gravimetric, infrared, and M{\"o}ssbauer data.",

keywords = "Crystal structure, Nitroprusside, Porous material, Prussian blue analogues, Rietveld",

author = "J. Rodr{\'i}guez-Hern{\'a}ndez and E. Reguera and M. Mir and Mascarenhas, {Y. P.}",

year = "2007",

doi = "10.1154/1.2434787",

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volume = "22",

pages = "40--46",

journal = "Powder Diffraction",

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T1 - Crystal structures of three anhydrous nitroprussides

T2 - M[Fe(CN) 5NO] (M=Mn,Zn,Cd)

AU - Rodríguez-Hernández, J.

AU - Reguera, E.

AU - Mir, M.

AU - Mascarenhas, Y. P.

PY - 2007

Y1 - 2007

N2 - The crystal structures of Mn, Zn, and Cd nitroprussides in their anhydrous state, M[Fe(CN) 5 NO] (M=Mn,Zn,Cd), were refined from XRD powder patterns using the Rietveld method. These compounds have a porous framework useful for adsorption and storage of small molecules. Water crystallization can be removed by heating below 100 °C without disrupting the 3D network by introducing certain structural modification mainly around the M site (Mn, Zn, Cd). For M=Mn and Cd, the compounds were found to be orthorhombic with space group Pnma [Mn:a=13.7844(1), b=7.3750(2), c=10.9470(2) Å, V=1112.8(1) Å3, Z=4; Cd:a=13.9566(3), b=7.5040(4), c=11.0230(2) Å, V=1154.4(1) Å3, Z=4]. Anhydrous zinc nitroprusside crystallizes in rhombohedral with space group R 3- [a=b=19.2525(1),c=17.7107(2) Å,γ=120.0°,V=5685.1(1) Å3, Z=18]. When exposed to humid air, these anhydrous compounds become hydrated. The XRD powder patterns were recorded under vacuum on samples dehydrated in situ. The structural information from XRD was complemented with thermo-gravimetric, infrared, and Mössbauer data.

AB - The crystal structures of Mn, Zn, and Cd nitroprussides in their anhydrous state, M[Fe(CN) 5 NO] (M=Mn,Zn,Cd), were refined from XRD powder patterns using the Rietveld method. These compounds have a porous framework useful for adsorption and storage of small molecules. Water crystallization can be removed by heating below 100 °C without disrupting the 3D network by introducing certain structural modification mainly around the M site (Mn, Zn, Cd). For M=Mn and Cd, the compounds were found to be orthorhombic with space group Pnma [Mn:a=13.7844(1), b=7.3750(2), c=10.9470(2) Å, V=1112.8(1) Å3, Z=4; Cd:a=13.9566(3), b=7.5040(4), c=11.0230(2) Å, V=1154.4(1) Å3, Z=4]. Anhydrous zinc nitroprusside crystallizes in rhombohedral with space group R 3- [a=b=19.2525(1),c=17.7107(2) Å,γ=120.0°,V=5685.1(1) Å3, Z=18]. When exposed to humid air, these anhydrous compounds become hydrated. The XRD powder patterns were recorded under vacuum on samples dehydrated in situ. The structural information from XRD was complemented with thermo-gravimetric, infrared, and Mössbauer data.

KW - Crystal structure

KW - Nitroprusside

KW - Porous material

KW - Prussian blue analogues

KW - Rietveld

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U2 - 10.1154/1.2434787

DO - 10.1154/1.2434787

M3 - Artículo

SN - 0885-7156

VL - 22

SP - 40

EP - 46

JO - Powder Diffraction

JF - Powder Diffraction

IS - 1

ER -

Crystal structures of three anhydrous nitroprussides: M[Fe(CN) ₅NO] (M=Mn,Zn,Cd)

Abstract

Keywords

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