Electric Literature of C7H9NO2In 2021 ,《Cobalt complexes of an OSNSO-tetrapodal pentadentate ligand: Synthesis, structures and reactivity》 appeared in Inorganica Chimica Acta. The author of the article were Thevenin, Lucas; Daran, Jean-Claude; Poli, Rinaldo; Fliedel, Christophe. The article conveys some information:
The novel pentadentate tetrapodal proligand 2,6-bis[(2-hydroxyphenyl)thiomethyl]pyridine (1·H2) and its cobalt(II) complex [Co(1)] (2) were synthesized and characterized by several anal. (EA, ESI-MS) and spectroscopic methods (NMR or EPR, FTIR), including x-ray crystallog. for 1·H2. Cyclic voltammetry studies showed that 2 undergoes a reversible metal-based oxidation (CoII/CoIII). Complex 2 was designed to be applied to organometallic mediated radical polymerization (OMRP), however it exhibited an extremely poor solubility in non-coordinating solvents and several vinyl monomers (styrene, vinyl acetate and tert-Bu acrylate), which hampers its potential as moderator. Complex 2 has a high affinity towards Lewis bases, such as pyridine, leading to the clean formation of the mono-pyridine adduct 2·py, as confirmed by x-ray crystallog. In 2·py, ligand 1 is pentacoordinated to the CoII center, with the two thioether-phenolate (S,O) moieties oriented anti to each other, and the only free coordination site of the octahedron is completed by the addnl. pyridine, trans to the central pyridine linker of 1. The equilibrium between 2 and 2·py could be studied by 1H NMR. Complex 2 could be cleanly and quant. oxidized to its diamagnetic iodo cobalt(III) analog [Co(1)I] (3), by simple reaction with iodine. The latter could then be subjected to a halide abstraction reaction, mediated by K[B(C6F5)], affording the cationic complex [Co(1)][B(C6F5)], 4. The experimental part of the paper was very detailed, including the reaction process of 2,6-Pyridinedimethanol(cas: 1195-59-1Electric Literature of C7H9NO2)
2,6-Pyridinedimethanol(cas: 1195-59-1) belongs to pyridine. The basicity and metallophilic high donor number of these π-deficient systems has long favored them as ligands in metal catalysis. The last decade saw pyridine assume a stronger role as functional group for directed C–H oxidation/activation.Electric Literature of C7H9NO2
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts