Series of Protonated Nitrogen Bases with a Weakly Coordinating Counteranion: Observation of the 14N–1H Spin–Spin Coupling

IF 3.3 Q2 CHEMISTRY, MULTIDISCIPLINARY ACS Organic & Inorganic Au Pub Date : 2023-10-20 DOI:10.1021/acsorginorgau.3c00045
Maria C. Carrasco, Firoz Shah Tuglak Khan and Shabnam Hematian*, 
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Abstract

A distinguished triplet splitting pattern for the 14N–1H couplings in the proton signals of a series of protonated nitrogen bases─aliphatic and aromatic amines, as well as pyridines─with the weakly coordinating tetrakis(pentafluorophenyl)borate anion, [B(C6F5)4], is observed for the first time in nonaqueous media at room temperature. The effects of ion pairing, solvent parameters, and correlation between the δH, 1JNH, and pKa values are reported.

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具有弱配位反阴离子的质子化氮基系列:14N-1H 自旋-自旋耦合观测
在室温下的非水介质中,首次观察到一系列质子化氮基(脂肪族和芳香族胺以及吡啶)与弱配位的四(五氟苯基)硼酸阴离子 [B(C6F5)4]- 的质子信号中 14N-1H 偶联的三重分裂模式。报告了离子配对、溶剂参数以及 δH、1JNH 和 pKa 值之间相关性的影响。
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ACS Organic & Inorganic Au
ACS Organic & Inorganic Au 有机化学、无机化学-
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期刊介绍: ACS Organic & Inorganic Au is an open access journal that publishes original experimental and theoretical/computational studies on organic organometallic inorganic crystal growth and engineering and organic process chemistry. Short letters comprehensive articles reviews and perspectives are welcome on topics that include:Organic chemistry Organometallic chemistry Inorganic Chemistry and Organic Process Chemistry.
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