Tuning the 1H NMR paramagnetic relaxation enhancement and local order of [Aliquat]+-based systems mixed with DMSO was written by Cordeiro, Rui;Beira, Maria J.;Cruz, Carlos;Figueirinhas, Joao L.;Corvo, Marta C.;Almeida, Pedro L.;Rosatella, Andreia A.;Afonso, Carlos A. M.;Daniel, Carla I.;Sebastiao, Pedro J.. And the article was included in International Journal of Molecular Sciences in 2021.COA of Formula: C25H54ClN The following contents are mentioned in the article:
Understanding the behavior of a chem. compound at a mol. level is fundamental, not only to explain its macroscopic properties, but also to enable the control and optimization of these properties. The present work aims to characterize a set of systems based on the ionic liquids [Aliquat][Cl] and [Aliquat][FeCl4] and on mixtures of these with different concentrations of DMSO by means of 1H NMR relaxometry, diffusometry and X-ray diffractometry. Without DMSO, the compounds reveal locally ordered domains, which are large enough to induce order fluctuation as a significant relaxation pathway, and present paramagnetic relaxation enhancement for the [Aliquat][Cl] and [Aliquat][FeCl4] mixture The addition of DMSO provides a way of tuning both the local order of these systems and the relaxation enhancement produced by the tetrachloroferrate anion. Very small DMSO volume concentrations (at least up to 1%) lead to enhanced paramagnetic relaxation without compromising the locally ordered domains. Larger DMSO concentrations gradually destroy these domains and reduce the effect of paramagnetic relaxation, while solvating the ions present in the mixtures The paramagnetic relaxation was explained as a correlated combination of inner and outer-sphere mechanisms, in line with the size and structure differences between cation and anion. This study presents a robust method of characterizing paramagnetic ionic systems and obtaining a consistent anal. for a large set of samples having different co-solvent concentrations This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3COA of Formula: C25H54ClN).
N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.COA of Formula: C25H54ClN
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics