Reactivity and Magnetic Coupling of Triangulene Dimers Linked via para-Biphenyl Units.

ABSTRACT: Triangulene and its homologues are promising building blocks for high-spin low-dimensional networks with long-range magnetic order. Despite the recent progress in the synthesis and characterization of coupled triangulenes, key parameters such as the number of organic linking units or their dihedral angles remain scarce, making further studies crucial for an essential understanding of their implications. Here, we investigate the synthesis and reactivity of two triangulene dimers linked by two (Dimer 1) or one (Dimer 2) para-biphenyl units, respectively, on a metal surface in an ultra-high vacuum environment. First-principles calculations and model Hamiltonians reveal how spin excitation and radical character depend on the rotation of the para-biphenyl units. Comprehensive scanning tunneling

SUBMITTER: Perez-Elvira E 

PROVIDER: S-EPMC12015394 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature