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

被引：0
作者：
Carrasco, Maria C. [1 ]
Khan, Firoz Shah Tuglak [1 ]
Hematian, Shabnam [1 ]
机构：
[1] Univ North Carolina Greensboro, Dept Chem & Biochem, Greensboro, NC 27402 USA
来源：
ACS ORGANIC & INORGANIC AU | 2023年 / 4卷 / 01期
基金：
美国国家科学基金会;
关键词：
Protonated nitrogen bases; NMR spectroscopy; Nitrogen-14 nuclear quadrupole effects; Solvent effects; Ion pairing; NUCLEAR-MAGNETIC-RESONANCE; QUADRUPOLE RELAXATION; ACID-BASE; NMR; BASICITY; PYRIDINE; PK(A); BOND; ACETONITRILE; EQUILIBRIUM;
D O I：
10.1021/acsorginorgau.3c00045
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A distinguished triplet splitting pattern for the N-14-H-1 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 delta(H), (1)J(NH), and pK(a) values are reported.
引用
收藏
页码：91 / 96
页数：6
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