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Solid Supramolecular Complexes of Potassium Salts of N-Methoxynitroaniline Derivatives and Methoxyamino-3,5-dinitropyridine with 18-Crown-6 Ether

✍ Scribed by Irina Cristina Covaci; Titus Constantinescu; Miron T. Caproiu; Constantin Luca; Alexandru T. Balaban

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
310 KB
Volume
2000
Category
Article
ISSN
1434-193X

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✦ Synopsis

Reactions of substituted N-methoxynitroaniline derivatives (1) or 2-methoxyamino-3,5-dinitropyridine (2) with potassium hydroxide afford the corresponding potassium salts (K + A -) in high yield. After dissolution of these salts in dichloromethane in the presence of 18-crown-6 ether (18-C-6), the addition of petroleum ether led to the precipitation of the corresponding solid supramolecular complexes of the type [18-C-6•••K] + A -, having the stoichiometry 1:1:1. The UV/vis and 1 H NMR [a] Roumanian Academy,

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Solution and Solid-State Preparation of 18-Crown[6] Complexes with M[HSO4]n Salts (M = NH4+, K+, Sr2+ and n = 1, 2) and an Investigation of Solvation/Desolvation Processes and Crystal Polymorphism
✍ Dario Braga; Massimo Gandolfi; Matteo Lusi; Demis Paolucci; Marco Polito; Katia 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 313 KB 👁 1 views

## Abstract 18‐Crown[6] ether has been used to prepare a new class of organic–inorganic complexes of general formula 18‐crown[6]⋅M[HSO~4~]~__n__~ (where M = NH~4~^+^, K^+^, Sr^2+^ and __n__ = 1, 2) by reacting directly in solution or in the solid state the crown ether 18‐crown[6] with inorganic sal