𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Hydration, Ion Pairing, and Sandwich Motifs in Ammonium Nitrate Complexes of Crown Ethers

✍ Scribed by Kenneth M Doxsee; Perry E Francis Jr.; Timothy J.R Weakley

Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
157 KB
Volume
56
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

✦ Synopsis

AbstractÐAmmonium nitrate coordinates to 18-crown-6 through a near-ideal `tripod' arrangement of hydrogen bonds to alternate crown ether oxygen atoms. Ion pairing interactions are apparent, with the strength of this ion pairing interaction appearing to be reduced by hydration, representing a potentially signi®cant role of water in cation±molecule complexes. The bis(benzo-15-crown-5) complex of ammonium nitrate is of sandwich type structure, with the ammonium ion complexed between two roughly parallel crown ether rings through an unusual but ef®cient set of linear, bifurcated, and off-axis hydrogen bonding interactions.

📜 SIMILAR VOLUMES

Ion-pair formation of cadmium-18-crown-6
Ion-pair formation of cadmium-18-crown-6 ethers complex ions with picrate and chloride ions in water and distribution of its picrate ion-pair complex into benzene
✍ Yoshihiro Kudo; Yota Kobayashi; Shoichi Katsuta; Yasuyuki Takeda 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 357 KB

Ion-pair formation in water Distribution of cadmium ion-pair complex into benzene Cadmium picrate Crown ethers Potentiometry with ISE Overall ion-pair formation constants (β 2 /mol -2 dm 6 ) of CdL 2+ with picrate ion (Pic -) and Cl -in water (w) were determined at 298 K potentiometrically, where L

Ultraviolet-visible spectroscopic study
Ultraviolet-visible spectroscopic study of ion-pairs of sodium and potassium monoethyl benzeneazophosphonates and their crown ether complexes in acetonitrile
✍ Lj. Tušek-Božić 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 317 KB

The u.v.-vis spectroscopic study of ion-pairs of the sodium and potassium monoethyl ester of [a-(4-benzeneazoanilino)-N-benzyl] phosphonic acid, [a-(4-benzeneazoanilino~N-4-hydroxybenzyl] phosphonic acid and [a-(4-benzeneazoanilino)-N-4-methoxybenzyl] phosphonic acid and their complexes with dibenz