A cobalt adduct of an N-hydroxy-piperidinium cation.

ABSTRACT: Cooperativity between organic ligands and transition metals in H-atom (proton/electron) transfer catalysis has been an important recent area of investigation. Tetramethylpiperidine-N-oxyl (TEMPO) radicals feature prominently in this area, prompting us to examine cooperativity between its hydrogenated congener, TEMPOH, and Co centers ligated by dihydrazonopyrrole ligands which have previously been shown to also store H-atom equivalents. Addition of TEMPOH to ( ^tBu,TolDHP)CoOTf results in formation of an unusual Co-adduct of 1-hydroxy-2,2,6,6-tetramethylpiperidin-1-ium (TEMPOH₂ ⁺) which has been characterized with IR spectroscopy and single crystal X-ray diffraction. This adduct is thermally unstable, and decomposes, putatively via N-O homolysis, to ge

SUBMITTER: Anferov SW 

PROVIDER: S-EPMC10153568 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature