Photochemical Synthesis and Magnetic Property Investigation of a Mixed-valence 11-Tungstophosphate

Chemical Research in Chinese Universities ›› 1998, Vol. 14 ›› Issue (3): 241-244.

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Photochemical Synthesis and Magnetic Property Investigation of a Mixed-valence 11-Tungstophosphate

LI Pei, LIU Hui-zhang, JIN Song-lin, XIE Gao-yang

Department of Chemistry, Fudan University, Shanghai 200433

Received:1997-05-08 Online:1998-08-24 Published:2011-08-17
Supported by:
Supportedbythe National Natural Science Foundation of China.

Abstract

Abstract: A mixed-valence lacunary tungstophosphate with Keggin structure was photochemically synthesized. It was proved to be an one-electron reduced heteropoly "blue" by W(V) analysis. The subsequent changes were observed in the UV-Vis, IR and ³¹P NMR spectra of the mixed-valence species due to the introduced "blue" electron. The magnetic property investigated by means of the Evans method suggested that the "blue" electron was fully delocalized over the framework of the mixed-valence lacunary tungstophosphate, and the vacancy in the lacunary species did not transmit the circulating electron, which thus blocked "ring current" in some intersecting loops.

Key words: Photochemical synthesis, Magnetic property, 11-Tungstophosphate

LI Pei, LIU Hui-zhang, JIN Song-lin, XIE Gao-yang . Photochemical Synthesis and Magnetic Property Investigation of a Mixed-valence 11-Tungstophosphate[J]. Chemical Research in Chinese Universities, 1998, 14(3): 241-244.

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Photochemical Synthesis and Magnetic Property Investigation of a Mixed-valence 11-Tungstophosphate

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