【摘 要】
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The structures,relative stabilities,vertical electron detachment energies and magnetic properties of a series of trinuclear clusters are explored via combin
【机 构】
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College of Chemistry and Materials Science,Northwest University,Xi'an 710069
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The structures,relative stabilities,vertical electron detachment energies and magnetic properties of a series of trinuclear clusters are explored via combined broken-symmetry DFT and ab initio study.Several XC functionals are utilized to investigate the effects of different halogen ligands and central atoms on their properties.These clusters are shown to possess stronger superhalogen properties than previously reported dinuclear ones.The calculated exchange coupling constants indicate antiferromagnetic coupling between transition metal ions.Spin density analysis shows the importance of spin delocalization in determining the strengths of various couplings.Spin frustration is shown to occur in some trinuclear clusters.The coexistence of strong superhalogen properties and spin frustration implies the possibility of trinuclear superhalogens working as the building block of new materials of novel magnetic properties.
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