EPR and magnetic studies of a novel copper metal orgainc framework (STAM-1)

Hassane El Mkami, Mohamed Infas Haja Mohideen, Chandrima Pal, Alistair Craig McKinlay, Olav Schiemann, Russell Edward Morris

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

The magnetic interaction between dinuclear copper (II) in a new copper carboxylate
compound, STAM-1, has been investigated by means of EPR and SQUID
measurements. The powder EPR spectra, measured at 9.80 and 34.5 GHz and at
different temperatures, show the typical lines of the triplet state (S=1), attributed to
Cu2+-Cu2+ dimers, in addition of a temperature dependent central lines. The zero
field splitting parameters obtained are |Dobs|=0.337 cm-1 and E~0. Magnetic
susceptibility data, performed in the range 1.8-300K, shows a strong
antiferromagnetic exchange coupling between the Cu2+ centers in the paddle-wheel
units with the exchange coupling constant 2J=-334±4 cm-1.
Original languageEnglish
Pages (from-to)17-21
Number of pages5
JournalChemical Physics Letters
Volume544
Publication statusPublished - 2012

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