A Structurally Perfect S = 1/2 Metal-Organic Hybrid Kagome Antiferromagnet

摘要

Geometric spin frustration occurs when the structural arrangement of spins precludes the simultaneous satisfaction of all nearest-neighbor interactions. The corner-sharing equilateral triangles of a kagome lattice present an excellent construct on which to study spin frustration; spin liquid physics can result when the kagome lattice features S = 1/2 spins on lattice vertices. However, compounds bearing the kagome structural motif are rare, and exceptionally so when an organic moiety is a structural constituent of the kagome triangles. Previous studies of spin frustration on metal-organic hybrid kagome compounds have been complicated by long exchange pathways, triangulated or interpenetrating structures,19 and spin centers composed of dimers displaying intradimer exchange interactions.