Year: 2024
Type: article
Abstract: : We report the synthesis and characterization of Mn(III) chloride (MnIIICl3) complexes coordinated with N-oxide ylide ligands, namely trimethyl-N-oxide (Me3NO) and pyridine-N-oxide (PyNO). The compounds are reactive and, while isolable in the solid-state at room temperature, readily decompose into Mn(II). For example, “[MnIIICl3(ONMe3)n]” decomposes into the 2D polymeric network compound complex salt [MnII(µ-Cl)3MnII(µ-ONMe3)]n[MnII(µ-Cl)3]n•(Me3NO•HCl)n (4). The reaction of MnIIICl3 with PyNO forms varied Mn(III) compounds with PyNO coordination and these react with hexamethylbenzene (HMB) to form the chlorinated organic product 1-cloromethyl-2,3,4,5,6-pentamethylbenzene (8). In contrast to N-oxide coordination to Mn(III), the reaction between [MnIIICl3(OPPh3)2] and 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) resulted in electron transfer forming d5 manganate of the [TEMPO] cation instead of TEMPO–Mn(III) adducts. The reactivity affected by N-oxide coordination is discussed through comparisons with other L–MnIIICl3 complexes within the context of reduction potential.
Source: Molecules
Authors: Ananya Saju, Mathew R. Crawley, Samantha N. MacMillan, Pierre Le Magueres, Mark Del Campo, David C. Lacy
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,069
Awards: MRI: Acquisition of a 500 MHz Nuclear Magnetic Resonance (NMR) Spectrometer for Research and Training, G2224259305, G3115331635, G342026270, G3448216593, MRI: Acquisition of a High Brilliance Dual-Source X-ray Diffractometer for Advanced Materials Research, Education, and Training in Western New York, CAREER: Synthesis and characterization of manganese complexes toward earth-abundant green catalysts, G4224810292, Tritium Enrichment with Manganese Reagents, G7233916203, G9000118766, G9000154503
OpenAlex ID: W4403040385