Anion receptors containing NH binding sites: Hydrogen-bond formation or neat proton transfer?

Amendola V; Boiocchi M; Fabbrizzi L; Palchetti A

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Anion receptors containing NH binding sites: Hydrogen-bond formation or neat proton transfer?

机译：含有NH结合位点的阴离子受体：氢键形成或纯质子转移？

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When the amide-containing receptor I+ is in a solution of dimethyl sulfoxide (DMSO) in the presence of basic anions (CH3COO-, F-, H2PO4-), it undergoes deprotonation of the -NH fragment to give the corresponding zwitterion, which can be isolated as a crystalline solid. In the presence of less basic anions (Cl-, Br-, NO3-), 1(+) establishes true hydrogen-bond interactions of decreasing intensity. The less acidic receptor 2(+) undergoes neat proton transfer with only the more basic anions CH3COO- and F-, and establishes hydrogen-bond interactions with H2PO4-. An empirical criterion for discerning neutralisation and hydrogen bonding, based on UV/Vis and H-1 NMR spectra, is proposed.

机译：当含酰胺的受体I +在碱性阴离子（CH3COO-，F-，H2PO4-）存在下的二甲基亚砜（DMSO）溶液中时，会对-NH片段进行去质子化反应，生成相应的两性离子，被分离为结晶固体。在存在较少碱性阴离子（Cl-，Br-，NO3-）的情况下，1（+）建立强度降低的真实氢键相互作用。酸性较低的受体2（+）仅通过碱性较高的阴离子CH3COO-和F-进行纯净的质子转移，并与H2PO4-建立氢键相互作用。提出了基于UV / Vis和H-1 NMR光谱识别中和和氢键的经验标准。

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《Chemistry: A European journal》 |2004年第1期|共8页
作者
Amendola V; Boiocchi M; Fabbrizzi L; Palchetti A;
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正文语种 eng
中图分类化学;
关键词
anions; hydrogen bonds; molecular recognition; proton transfer; receptors; CRYSTAL-STRUCTURE; SOLID-STATE;

机译：阴离子;氢键;分子识别;质子转移;受体;晶体结构;固态;

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专利

1. Anion Receptors Containing-NH Binding Sites:Hydrogen-Bond Formation or Neat Proton Transfer? [J] . Valeria Amendola, Massimo Boiocchi, Luigi Fabbrizzi, Chemistry: A European journal . 2005,第1期

机译：含NH键的阴离子受体：氢键形成或质子转移？
2. Anion receptors containing NH binding sites: Hydrogen-bond formation or neat proton transfer? [J] . Amendola V, Boiocchi M, Fabbrizzi L, Chemistry: A European journal . 2004,第1期

机译：含有NH结合位点的阴离子受体：氢键形成或纯质子转移？
3. Anion receptors containing NH binding sites: Hydrogen-bond formation or neat proton transfer? [J] . Amendola V, Boiocchi M, Fabbrizzi L, Chemistry: A European journal . 2004,第1期

机译：含有NH结合位点的阴离子受体：氢键形成或纯质子转移？
4. Synthesis, Structure, and Binding Properties of Neutral Anion Receptors [C] . Janusz Jurczak European Symposium on Organic Chemistry . 2009

机译：中性阴离子受体的合成，结构和结合特性
5. Proton-Coupled Electron Transfer Reactivity of Ruthenium Complexes with Separation Between the Proton and Electron Transfer Sites. [D] . Wittman, Jessica M. 2014

机译：质子与电子转移位点之间分离的钌配合物的质子耦合电子转移反应性
6. Synthesis and anion binding studies of tris(3-aminopropyl)amine-based tripodal urea and thiourea receptors: Proton transfer-induced selectivity for hydrogen sulfate over sulfate [O] . Maryam Emami Khansari, Corey R. Johnson, Ismet Basaran, -1

机译：三（3-氨基丙基）胺基三脚架尿素和硫脲受体的合成和阴离子结合研究：质子转移诱导的硫酸氢对硫酸盐的选择性
7. Synthesis and anion binding studies of tris(3-aminopropyl)amine-based tripodal urea and thiourea receptors: proton transfer-induced selectivity for hydrogen sulfate over sulfate [O] . Maryam Emami Khansari, Corey R. Johnson, Ismet Basaran, 2015

机译：三（3-氨基丙基）胺类三级尿素脲和硫脲受体的合成和阴离子结合研究：质子转移诱导的硫酸氢硫酸氢的选择性

Anion receptors containing NH binding sites: Hydrogen-bond formation or neat proton transfer?

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