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Preparation and Characterization of a Novel Gadolinium Triple-Decker Sandwich-Type Complex with Tetrabenzoporphyrin Ligand

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Abstract:

A novel gadolinium triple-decker sandwich-type complex containing tetrabenzoporphyrin (TBP) ligands-Gd (TBP)3 was prepared from porphyrin 1 and Gd (acac)3.nH2O in boiling 1, 2, 4-Tcb for 45~48 h under Ar. Its structure is characterized by Uv-Vis spectroscopy and HR-MS. The spectroscopic properties show that its longest-wavelength visible band (600-800 nm) is obviously red-shifted due to the extension of the π conjugated systems derived from the linear benzoannulation in the TBP ring. The magnetic studies also indicate that there is no magnetic interactions between two Gd (III) ions in the triple-deckers in the range from room temperature down to 20K and very weak antiferromagnetic coupling exists between two Gd (III) ions below 20K.

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Periodical:

Advanced Materials Research (Volumes 690-693)

Pages:

573-576

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.690-693.573

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Online since:

May 2013

Authors:

Qi Feng Liu

Keywords:

Gadolinium Metal, Sandwich-Like Complex, Spectroscopic and Magnetic Properties, Tetrabenzoporphyrin (TBP), Triple-Decker

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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