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.
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 language | English |
|---|---|
| Pages (from-to) | 17-21 |
| Number of pages | 5 |
| Journal | Chemical Physics Letters |
| Volume | 544 |
| Publication status | Published - 2012 |