Ladder-Type Cu(II) Coordination Polymer with π-π Stacking of Planar Blatter Radical Ligands: Structural and Magnetic Characterization.

ABSTRACT: The synthesis of two C(2)-pyridyl derivatives of the planar Blatter radical was developed by using the tris-(trimethylsilyl)-silane (TTMSS)-assisted cyclization of appropriate iodoarenes. These monodentate paramagnetic ligands were characterized by spectroscopic (UV-vis and electron paramagnetic resonance (EPR)) and electrochemical methods and reacted with (pdc)-Cu-(H₂O)₃. A complex containing the 3-pyridyl group was characterized structurally, revealing novel polymeric Cu-O-Cu-O ladders separated with slipped stacks of radical ligands. Superconducting quantum interference device (SQUID) magnetometry of this complex demonstrated strong antiferromagnetic interactions between the radicals and largely isolated Cu-(II) ions. Analysis of the magnetic data with the Hatfield

SUBMITTER: Singh HK 

PROVIDER: S-EPMC12492399 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature