Rare-earth ferricyanides and chromicyanides LnT(CN)6·nH2O

Hulliger, F.; Landolt, M.; Vetsch, H.

doi:10.1016/0022-4596(76)90107-9

Cited by 149 publications

(108 citation statements)

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“…The first one, with general formula LnFe III -(CN) 6 ·5H 2 O, contains Ln = La to Nd and is isostructural with the first ferrocyanide series (one water molecule replaces one potassium atom). [18][19][20] The second series contains Ln = Pr to Lu with general formula LnFe III (CN) 6 · 4H 2 O. [21][22][23] 2 polyhedron forms a square antiprism.…”

Section: Introductionmentioning

confidence: 99%

Local Structure in Americium and Californium Hexacyanoferrates – Comparison with Their Lanthanide Analogues

et al. 2011

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Metal hexacyanoferrates are well known molecular solids for a large variety of cations, although very little has been described for actinide adducts. Two new members of actinide(III) hexacyanoferrates were synthesized with the cations americium and californium. They were structurally characterized by infrared and X-ray absorption spectroscopy. Combined EXAFS data at the iron K edge and actinide L3 edge provide evidence for a three-dimensional model for these two new compounds. Structural data in terms of bond lengths were compared to those reported for the parent lanthanide(III) compounds, neodymium and gadolinium hexacyanoferrates, respectively: the americium compound with KNdIIIFeII(CN)6*4H2O and the californium compound with KGdIIIFeII(CN)6*3.5H2O and KGdIIIFeII(CN)6*3H2O. This comparison between actinide and lanthanide homologues has been carried out on the basis of ionic radii considerations. The americium and neodymium environments appear to be very similar and are arranged in a tricapped trigonal prism polyhedron of coordination number 9 (CN: 9), in which the americium atom is bonded to six nitrogen atoms and to three water molecules. For the californium adduct, a similar comparison and bond length and angle values derived fromEXAFS studies suggest that the californium cation sits in a bicapped trigonal prism (CN: 8) as in KGdIIIFeII(CN)6*3H2O. This arrangement differs from that in the structure of KGdIIIFeII(CN)6*3.5H2O, in which the gadolinium atom is surrounded by 9 atoms. This is one of the rare pieces of information revealed by EXAFS spectroscopy for americium and californium in comparison to lanthanide atoms in molecular solid compounds. A discussion on the decrease in bond length and coordination number from americium to californium is also provided, on the basis of crystallographic results reported in the literature for actinide(III) and lanthanide(III) hydrate series

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Section: Introductionmentioning

confidence: 99%

Local Structure in Americium and Californium Hexacyanoferrates – Comparison with Their Lanthanide Analogues

et al. 2011

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“…The obtained lattice parameters are identical with the reported data [5][6][7]. Gd Mössbauer spectra were computer-fitted to quadrupole-split five-lines (I g -I e = 3/2-5/2, h = 0) using the sum of the Lorentz approximations [16].…”

Section: Preparation Of the Materialsmentioning

confidence: 89%

“…This indicates that the EFG at the Gd site in II is larger than that in I due to the potassium ions of II locating at the position of the zeolitic water molecules of I. The distance Gd -K + is estimated as 4.74 Å, which is the distance between the Gd 3+ ion and the oxygen atom of zeolitic water in GdFe(CN) 6 In the LnM(CN) 6 · nH 2 O and KLnM(CN) 6 · nH 2 O series, the orthorhombic distortion 3 1/2 a/b -1 in their crystal structures is often used as parameter to discuss the structural properties of them [3,[5][6][7]. The a and b are the cell parameters of the orthorhombic Cmcm crystal structure.…”

Section: Preparation Of Thementioning

confidence: 99%

“…Among a number of cyano assembled metal complexes, the rare-earth hexacyanometalate(III) LnM (CN) 6 · nH 2 O (Ln = rare-earth ion, M = transition metal ion) and the rare-earth hexacyanometalate(II) KLnM(CN) 6 · nH 2 O have been studied because of their interesting structural and magnetic properties [2][3][4][5][6][7][8]. Hexagonal LnM(CN) 6 · 5H 2 O is formed with larger Ln ions such as La 3+ , Ce 3+ , and orthorhombic LnM(CN) 6 · 4H 2 O with smaller Ln ions such as Sm 3+ , Gd 3+ .…”

Section: Introductionmentioning

confidence: 99%

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¹⁵⁵Gd Mössbauer Spectroscopic Study of GdM(CN)₆ · 4H₂O (M = CrIII, FeIII and CoIII) and KGdM(CN)₆ · 3H₂O (M = Fe^II and Ru^II)

Wang

Abe

Kitazawa

et al. 2002

Zeitschrift Für Naturforschung A

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“…One of these materials are cyano-bridged 4f -3d assemblies. f -block lanthanide ions having large anisotropic magnetic moments yield hard magnets and long-range magnetic order in solids [4,[9][10][11]. Some of cyanobridged 4f -3d assemblies also exhibit field-induced magnetic relaxation [10], cooling-rate dependent magnetism [12], photo-induced magnetization [13], and humidity response [14] .…”

Section: Introductionmentioning

confidence: 99%

Critical behavior of low dimensional magnetic systems

Özkan

Kutlu

2017

Journal of Magnetism and Magnetic Materials

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In this study, critical behavior of low dimensional magnetic systems as cyano-bridged Tb(III)-Cr(III) bimetallic assembly was investigated with the mixed spin 3-spin 3/2 Ising model. The mixed spin Ising model is simulated with Cellular Automaton cooling and heating algorithms on one-dimensional lattices in periodic boundary conditions. The Ising model Hamiltonian includes only antiferromagnetic nearest-neighbor interaction (J > 0). The mixed spin system behaves like the isolated one-dimensional chain for zero magnetic field (h = H J = 0). In the presence of the magnetic field, the magnetization is calculated using zero-field cooling (ZF C) and field cooling (F C) processes. The one-dimensional Ising model results are compatible with the cyano-bridged Tb(III)-Cr(III) bimetallic quasi-one dimensional assembly ( ( Tb(H 2 O) 2 (DMF) 4 Cr(CN) 6 ·H2O(DMF= dimethylformamide)) results.

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Rare-earth ferricyanides and chromicyanides LnT(CN)6·nH2O

Cited by 149 publications

References 8 publications

Local Structure in Americium and Californium Hexacyanoferrates – Comparison with Their Lanthanide Analogues

Local Structure in Americium and Californium Hexacyanoferrates – Comparison with Their Lanthanide Analogues

¹⁵⁵Gd Mössbauer Spectroscopic Study of GdM(CN)₆ · 4H₂O (M = CrIII, FeIII and CoIII) and KGdM(CN)₆ · 3H₂O (M = Fe^II and Ru^II)

Critical behavior of low dimensional magnetic systems

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Rare-earth ferricyanides and chromicyanides LnT(CN)6·nH2O

Cited by 149 publications

References 8 publications

Local Structure in Americium and Californium Hexacyanoferrates – Comparison with Their Lanthanide Analogues

Local Structure in Americium and Californium Hexacyanoferrates – Comparison with Their Lanthanide Analogues

155Gd Mössbauer Spectroscopic Study of GdM(CN)6 · 4H2O (M = CrIII, FeIII and CoIII) and KGdM(CN)6 · 3H2O (M = FeII and RuII)

Critical behavior of low dimensional magnetic systems

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¹⁵⁵Gd Mössbauer Spectroscopic Study of GdM(CN)₆ · 4H₂O (M = CrIII, FeIII and CoIII) and KGdM(CN)₆ · 3H₂O (M = Fe^II and Ru^II)