Synthesis of New Amorphous Metallic Spin Glasses M 2 SnTe 4  (MCr, Mn, Fe, Co): Solvent Induced Metal‐Insulator Transformations | Zendy

Haushalter Robert C. | Zendy; O'Connor Charles M. | Zendy; Haushalter Jeanne P. | Zendy; Umarji Arun M. | Zendy; Shenoy Gopal K. | Zendy

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Synthesis of New Amorphous Metallic Spin Glasses M 2 SnTe 4 (MCr, Mn, Fe, Co): Solvent Induced Metal‐Insulator Transformations

Author(s) -

Haushalter Robert C.,

O'Connor Charles M.,

Haushalter Jeanne P.,

Umarji Arun M.,

Shenoy Gopal K.

Publication year - 1984

Publication title -

angewandte chemie international edition in english

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 0570-0833

DOI - 10.1002/anie.198401691

Subject(s) - anhydrous , amorphous solid , materials science , metal , amorphous metal , transition metal , electrical resistivity and conductivity , inorganic chemistry , solvent , crystallography , analytical chemistry (journal) , chemistry , metallurgy , organic chemistry , electrical engineering , engineering , catalysis

Precipitation of amorphous metallic spin glasses from solution is a novel, potentially general method. By this means, main‐group metal polyanions are oxidized by transition‐metal cations. The example which has been studied in most detail is Fe 2 SnTe 4 . This forms immediately as a black precipitate when methanolic solutions of anhydrous FeBr 2 and K 4 SnTe 4 are mixed at −20°C. The resistivity of pressed powder samples is low. In the presence of strong donor ligands, the FeTe bonds are selectively cleaved. Solid [Fe(en) 2 ] 2 SnTe 4 (orange) is an insulator.

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