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

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 δ_H, ¹J_NH, and pK_a values are reported.

SUBMITTER: Carrasco MC

PROVIDER: S-EPMC10853991 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature

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

Carrasco Maria C MC Khan Firoz Shah Tuglak FST Hematian Shabnam S

ACS organic & inorganic Au 20231020 1

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, 1 ...[more]

PMID: 38344016

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