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Kitadai, Kunihiko; Takahashi, Miwa; Takeda, M.

doi:10.1023/a:1022548602753

Cited by 10 publications

(7 citation statements)

References 5 publications

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“…In this picture, the most complete charge transfer is found in Li 3 Sb. This is in contradiction to the classical pictures using electronegativities (χ(Li) = 0.98, χ(Na) = 0.93, χ(K) = 0.82, χ(Rb) = 0.82) and also calculations of the ionicity (Li 3 Sb, 0.05; Na 3 Sb, 0.24). , XPS investigations furthermore confirmed a rather covalent bonding situation in Li 3 Sb and the Na 3 Sb → K 3 Sb → Rb 3 Sb series . The order of the isomer shifts δ in the Rb 3 Sb → Li 3 Sb series therefore suggests a decreased s-electron density.…”

Section: Resultscontrasting

confidence: 72%

(Pseudo)binary Antimonides: Insights on Local Ordering and Effective Charge Configurations from ¹²¹Sb MAS NMR and Mössbauer Spectroscopies

et al. 2021

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Binary antimonides of composition MSb (M = Al, Ga, In), RESb (RE = Sc, Y, La), CdSb, RE 4 Sb 3 (RE = Sc, La), and T 5 Sb 4 (T = Nb, Ta) as well as the pseudobinary solid solutions (La 0.25 M 0.75 ) 4 Sb 3 (M = Sr, Eu) were synthesized from the elements via arc-melting or induction heating and investigated by powder Xray diffraction, magnetic susceptibility, and solid-state 121 Sb MAS NMR as well as 121 Sb and 151 Eu Mossbauer spectroscopic studies. Besides CdSb, all compounds exhibit isolated antimony atoms (i.e., no Sb−Sb bonding), which formally carry a 3-fold negative charge, and only one single crystallographic Sb site is observed. While 121 Sb Mossbauer spectroscopic measurements of all X-ray pure phases were possible, not all of these compounds showed detectable 121 Sb MAS NMR signals due to Sb located on lower symmetric positions. For the cubic phases with high symmetry, a parameter was constructed on the basis of the 121 Sb MAS NMR data to describe the ratio between antimony positions with and without perfect cubic site symmetry, showing that structural disorder is present in all electron-precise compounds of this work. Magnetic measurements of (La 0.25 Eu 0.75 ) 4 Sb 3 (≡LaEu 3 Sb 3 ) further indicate divalent europium and antiferromagnetic ordering below T N = 5.4(1) K. The valence state was confirmed by 151 Eu Mossbauer spectroscopy. Thus, the gathered 121 Sb MAS NMR and 121 Sb and 151 Eu Mossbauer data were utilized to get a systematic overview regarding the effective charge configuration in terms of the 121 Sb chemical shift, formal valence states, and isomer shifts for Sb in the different structures of the studied series of compounds.

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Section: Resultscontrasting

confidence: 72%

(Pseudo)binary Antimonides: Insights on Local Ordering and Effective Charge Configurations from ¹²¹Sb MAS NMR and Mössbauer Spectroscopies

et al. 2021

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“…These Zintl anions also occur in the al-kali metal antimonides A 3 Sb (A = Li, Na, K, Rb) and the experimental isomer shifts are similar, i.e. -7.3 mm/s for Li 3 Sb [25] and -8.39 mm/s for Rb 3 Sb [26].…”

Section: Sb Mössbauer Spectroscopic Characterizationmentioning

confidence: 62%

Structural and ¹²¹Sb Mössbauer Spectroscopic Investigations of the Antimonide Oxides REMnSbO (RE = La, Ce, Pr, Nd, Sm, Gd, Tb) and REZnSbO (RE = La, Ce, Pr)

Schellenberg

Nilges

Pöttgen

2008

Zeitschrift Für Naturforschung B

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Heading: I. Schellenberg et al. . Quaternary Antimonide Oxides)) The quaternary antimonide oxides REMnSbO (RE = La, Ce, Pr, Nd, Sm, Gd, Tb) and REZnSbO (RE = La, Ce, Pr) were synthesized from the RESb monoantimonides and MnO, respectively ZnO, in sealed tubes at 1170 K. Single crystals were obtained from NaCl/KCl salt fluxes. The ZrCuSiAs type (space group P4/nmm) structures of LaMnSbO (a = 423.95(7), c = 955.5(27) pm, wR2 = 0.067, 247 F 2 ), CeMnSbO (a = 420.8(1), c = 950.7(1) pm, wR2 = 0.097, 250 F 2 ), SmMnSbO (a = 413.1(1), c = 942.3(1) pm, wR2 = 0.068, 330 F 2 ), LaZnSbO (a = 422.67(6), c = 953.8(2) pm, wR2 = 0.052, 259 F 2 ), and NdZnSbO (a = 415.9(1), c = 945.4(4) pm, wR2 = 0.109, 206 F 2 ) were refined from single crystal X-ray diffractometer data. The structures are composed of covalently bonded (RE 3+ O 2-) + and (T 2+ Sb 3-)layers with weak ionic-like interlayer interactions. The oxygen and transition metal atoms both have tetrahedral coordination within the layers. 121 Sb Mössbauer spectra of the REMnSbO and REZnSbO compounds show single antimony sites with isomer shifts close to -8 mm/s, in agreement with the antimonide character of these samples. PrMnSbO and NdMnSbO show transferred hyperfine fields of 8 T at 4.2 K.

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“…According to the ionic formula splitting discussed above the RETSbO compounds contains Sb 3pnictide anions. This Zintl anion also occur in the alkali metal antimonides A 3 Sb (A = Li, Na, K, Rb) with comparable isomer shifts of -7.3 mm/s for Li 3 Sb [112] and -8.39 mm/s for Rb 3 Sb [113]. Also the III-V semiconductors AlSb, GaSb and InSb [114] show comparable isomer shifts.…”

Section: Mössbauer Spectroscopymentioning

confidence: 65%

“…The three iron based compounds LaFePO [87], LaFeAsO, and LaFeAsO 0.89 F 0.11 [106,107] have been characterized by temperature dependent 57 [113]. Also the III-V semiconductors AlSb, GaSb and InSb [114] show comparable isomer shifts.…”

Section: Mössbauer Spectroscopymentioning

confidence: 99%

Materials with ZrCuSiAs-type Structure

Pöttgen

Johrendt

2008

Zeitschrift Für Naturforschung B

205

166

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The discovery of high-temperature superconductivity in the fluoride doped arsenide oxides REFeAs(O 1-x F x ) (RE = early rare earth element) with transition temperatures as high as 55 K gave a true renaissance in superconductivity research. These arsenide oxides constitute a rather small fraction of much larger family of compounds with the tetragonal ZrCuSiAs type structure (space group P4/nmm), among them pnictide-oxides and -fluorides, chalcogenide-oxides andflourides as well as silicide and germanide hydrides. Besides the spectacular superconductivity, these materials have further interesting properties with respect to magnetic ordering, transparent semiconducting behavior or to optical properties.The crystal chemical and chemical bonding peculiarities as well as the broadly varying physical properties are reviewed herein.

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Cited by 10 publications

References 5 publications

(Pseudo)binary Antimonides: Insights on Local Ordering and Effective Charge Configurations from ¹²¹Sb MAS NMR and Mössbauer Spectroscopies

(Pseudo)binary Antimonides: Insights on Local Ordering and Effective Charge Configurations from ¹²¹Sb MAS NMR and Mössbauer Spectroscopies

Structural and ¹²¹Sb Mössbauer Spectroscopic Investigations of the Antimonide Oxides REMnSbO (RE = La, Ce, Pr, Nd, Sm, Gd, Tb) and REZnSbO (RE = La, Ce, Pr)

Materials with ZrCuSiAs-type Structure

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Untitled

Cited by 10 publications

References 5 publications

(Pseudo)binary Antimonides: Insights on Local Ordering and Effective Charge Configurations from 121Sb MAS NMR and Mössbauer Spectroscopies

(Pseudo)binary Antimonides: Insights on Local Ordering and Effective Charge Configurations from 121Sb MAS NMR and Mössbauer Spectroscopies

Structural and 121Sb Mössbauer Spectroscopic Investigations of the Antimonide Oxides REMnSbO (RE = La, Ce, Pr, Nd, Sm, Gd, Tb) and REZnSbO (RE = La, Ce, Pr)

Materials with ZrCuSiAs-type Structure

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(Pseudo)binary Antimonides: Insights on Local Ordering and Effective Charge Configurations from ¹²¹Sb MAS NMR and Mössbauer Spectroscopies

(Pseudo)binary Antimonides: Insights on Local Ordering and Effective Charge Configurations from ¹²¹Sb MAS NMR and Mössbauer Spectroscopies

Structural and ¹²¹Sb Mössbauer Spectroscopic Investigations of the Antimonide Oxides REMnSbO (RE = La, Ce, Pr, Nd, Sm, Gd, Tb) and REZnSbO (RE = La, Ce, Pr)