Mixed cerium valence and unusual Ce–Ru bonding in Ce23Ru7Cd4

Tappe, Frank; Hermes, Wilfried; Eul, Matthias; Pöttgen, Rainer

doi:10.1016/j.intermet.2009.05.002

Cited by 26 publications

(25 citation statements)

References 32 publications

(34 reference statements)

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“…Finally, in other systems four intermetallics with short CeeRu distances were found: CeRuSn (2.330, 2.464 Å) [14,15], Ce 23 Ru 7 Cd 4 (2.582 Å) [16], Ce 23 Ru 7 Mg 4 (2.612, 2.754, 2.763 Å) [17], CeRu 2 Mg 5 (2.317 Å) [18] and Ce 2 RuZn 4 (2.601 Å) [19].…”

Section: Introductionmentioning

confidence: 87%

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Intermetallics La9Ru4In5 and Ce9Ru4Ga5 with new types of structures. Synthesis, crystal structures, physical properties

et al. 2012

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Section: Introductionmentioning

confidence: 87%

“…In CeeRueIn system, there were six ternary intermetallics with short CeeRu bonding: Ce 3 Ru 2 In 3 (2.375 Å) [4], Ce 16 Ru 8 In 37 (2.374 Å) [5], Ce 2 Ru 2 In 3 (2.323, 2.368 Å) [6], Ce 3 Ru 2 In 2 (2.235, 2.281 Å) [6], CeRu 0.88 In 2 (2.530 Å) [7] and Ce 16 Ru 8 In 3 (2.575 Å) [8].…”

Section: Introductionmentioning

confidence: 99%

Intermetallics La9Ru4In5 and Ce9Ru4Ga5 with new types of structures. Synthesis, crystal structures, physical properties

et al. 2012

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“…The so far most complex system is Ce 23 Ru 7 Cd 4 [26]. This structure contains nine crystallographically independent cerium sites.…”

Section: Introductionmentioning

confidence: 99%

Unusually Short Ce–Ru Distances in CeRuAl and Related Compounds

Hermes

Matar

Pöttgen

2009

Zeitschrift Für Naturforschung B

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The aluminide CeRuAl with orthorhombic LaNiAl-type structure contains two crystallographically independent cerium sites which both exhibit relatively short Ce-Ru distances, i. e. 280 -302 pm for Ce1 and 286 -310 pm for Ce2. Susceptibility measurements show intermediate valence behavior of the cerium atoms (1.19(1) µ B per formula unit) and no magnetic ordering down to 2 K. Chemical bonding analysis reveals a non-magnetic ground state and strong Ce-Ru bonding. The Ce-Ru bonding peculiarities of CeRuAl are discussed in line with those of other binary and ternary ceriumruthenium compounds.

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“…This peculiar feature has first been observed for several Ce x Ru y In z intermetallics [1 -4] and CeRuSn [5 -8]. In the meantime also aluminum [9], gallium [10], magnesium [11], cadmium [12], and zinc [13] compounds with similar structural features (two or even multiple cerium sites) have been reported. Overviews on the crystal chemical data are given in [14] and [15].…”

Section: Introductionmentioning

confidence: 71%

Solid-state ¹¹⁹Sn NMR and M¨ossbauer Spectroscopic Studies of the Intermediate-valent Stannide CeRuSn

Schappacher¹,

Khuntia²,

Rajarajan³

et al. 2012

Zeitschrift Für Naturforschung B

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The ternary stannide CeRuSn is a static mixed-valent cerium compound with an ordering of trivalent and intermediate-valent cerium on two distinct crystallographic sites. 119 Sn Mössbauer spectra showed two electronically almost identical tin atoms at 323 K, while at 298 K and below (77 and 4.2 K) two tin sites can clearly be distinguished. Solid-state 119 Sn NMR experiments were performed to probe the local hyperfine fields at the two different Sn sites. Powder 119 Sn NMR spectra are nicely fitted with two Sn sites with nearly the same magnetic anisotropy, but with different absolute shift values. Both Sn sites are strongly affected by crossover-like transitions between 100 and 280 K. This local-site study confirms the superstructure modulations found in previous investigations. Towards lower temperatures the powder NMR spectra are broadened giving strong precursor evidence for the antiferromagnetically ordered ground state.

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Mixed cerium valence and unusual Ce–Ru bonding in Ce23Ru7Cd4

Cited by 26 publications

References 32 publications

Intermetallics La9Ru4In5 and Ce9Ru4Ga5 with new types of structures. Synthesis, crystal structures, physical properties

Intermetallics La9Ru4In5 and Ce9Ru4Ga5 with new types of structures. Synthesis, crystal structures, physical properties

Unusually Short Ce–Ru Distances in CeRuAl and Related Compounds

Solid-state ¹¹⁹Sn NMR and M¨ossbauer Spectroscopic Studies of the Intermediate-valent Stannide CeRuSn

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Mixed cerium valence and unusual Ce–Ru bonding in Ce23Ru7Cd4

Cited by 26 publications

References 32 publications

Intermetallics La9Ru4In5 and Ce9Ru4Ga5 with new types of structures. Synthesis, crystal structures, physical properties

Intermetallics La9Ru4In5 and Ce9Ru4Ga5 with new types of structures. Synthesis, crystal structures, physical properties

Unusually Short Ce–Ru Distances in CeRuAl and Related Compounds

Solid-state 119Sn NMR and M¨ossbauer Spectroscopic Studies of the Intermediate-valent Stannide CeRuSn

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Solid-state ¹¹⁹Sn NMR and M¨ossbauer Spectroscopic Studies of the Intermediate-valent Stannide CeRuSn