Spin-Canting Magnetization in an Unusual Co₄ Cluster-Based Layer Compound from a 2,3-Dihydroxyquinoxaline Ligand

Abstract

The self-assembly of Co(O(2)CPh)(2) with a 2,3-dihydroxyquinoxaline (H(2)dhq) linker has revealed a new two-dimensional cluster-based compound, [Co(4)(OMe)(2)(O(2)CPh)(2)(dhq)(2)(MeOH)(2)](n), which shows spin-canted magnetization and a definite magnetic hysteresis loop.

Syntheses, Structures, and Photophysical Properties of Two Coordination Polymers Based on 2,3‐Dioxo‐1,2,3,4‐tetrahydroquinoxaline‐6‐carboxylic Acid

“…To date, many efforts have been devoted to design and synthesis versatile functional ligands, which are capable of coordinating to a metal ion while providing the π‐conjugated system and hydrogen‐bonding accepter/donor for organizing their complexes into supramolecular frameworks through intermolecular interactions . In recent years, the coordination chemistry of the tautomeric ligand 1,4‐dihydro‐2,3‐quinoxalinedione has been investigated . As a rigid multidentate ligand, it has four potential coordination sites and can exhibit two prototropic tautomeric forms under different conditions.…”