ChemInform Abstract: A Convenient and Efficient Method for the Preparation of Unique Fluorophores of Lariat Naphtho-aza-crown Ethers.

ChemInform ◽  
2008 ◽  
Vol 39 (48) ◽  
Author(s):  
Hashem Sharghi ◽  
Sakineh Ebrahimpourmoghaddam
Keyword(s):  
Crown Ethers ◽  
Efficient Method ◽  
Aza Crown Ethers

Side arm effects on cation binding, extraction, and transport functions of oligopyridine-functionalized aza-crown ethers

1993 ◽  
Vol 58 (16) ◽  
pp. 4389-4397 ◽  
Author(s):  
Hiroshi Tsukube ◽  
Junichi Uenishi ◽  
Hiromi Higaki ◽  
Kenichi Kikkawa ◽  
Takakazu Tanaka ◽  
...  
Keyword(s):  
Crown Ethers ◽  
Cation Binding ◽  
Aza Crown Ethers

scholarly journals Dansyl - Substituted Aza Crown Ethers: Complexation with Alkali, Alkaline Earth Metal Ions and Ammonium

2011 ◽  
Vol 3 (1) ◽  
Author(s):  
Nelly Mateeva ◽  
Shihab Deiab ◽  
Edikan Archibong ◽  
Donka Tasheva ◽  
Bereket Mochona ◽  
...  
Keyword(s):  
Metal Ions ◽  
Crown Ethers ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Alkaline Earth Metal Ions ◽  
Aza Crown Ethers

scholarly journals Complex Uranyl Dichromates Templated by Aza-Crowns

Crystals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 462 ◽  
Author(s):  
Oleg Siidra ◽  
Evgeny Nazarchuk ◽  
Dmitry Charkin ◽  
Stepan Kalmykov ◽  
Anastasiya Zadoya
Keyword(s):  
Aqueous Solutions ◽  
Crown Ethers ◽  
Room Temperature ◽  
Organic Molecules ◽  
Negative Charge ◽  
Uranyl Compounds ◽  
One Dimensional ◽  
Chain Complexes ◽  
Aza Crown Ethers

Three new uranyl dichromate compounds templated by aza-crown templates were obtained at room temperature by evaporation from aqueous solutions: (H2diaza-18-crown-6)2[(UO2)2(Cr2O7)4(H2O)2](H2O)3 (1), (H4[15]aneN4)[(UO2)2(CrO4)2(Cr2O7)2(H2O)] (H2O)3.5 (2) and (H4Cyclam)(H4[15]aneN4)2[(UO2)6(CrO4)8(Cr2O7)4](H2O)4 (3). The use of aza-crown templates made it possible to isolate unprecedented and complex one-dimensional units in 2 and 3, whereas the structure of 1 is based on simple uranyl-dichromate chains. It is very likely that the presence of relatively large organic molecules of aza-crown ethers does not allow uranyl chromate chain complexes to condense into the units of higher dimensionality (layers or frameworks). In general, the formation of 1, 2, and 3 is in agreement with the general principles elaborated for organically templated uranyl compounds. The negative charge of the [(UO2)(Cr2O7)2(H2O)]2−, [(UO2)2(CrO4)2(Cr2O7)2(H2O)]4− and [(UO2)3(CrO4)4(Cr2O7)2]6− one-dimensional inorganic motifs is compensated by the protonation of all nitrogen atoms in the molecules of aza-crowns.

scholarly journals De Novo Synthesis of Sugar-Aza-Crown Ethers via a Domino Staudinger Aza-Wittig Reaction.

ChemInform ◽  
2006 ◽  
Vol 37 (37) ◽  
Author(s):  
Mickael Menand ◽  
Jean-Claude Blais ◽  
Jean-Marc Valery ◽  
Juan Xie
Keyword(s):  
Crown Ethers ◽  
Wittig Reaction ◽  
De Novo ◽  
De Novo Synthesis ◽  
Aza Crown Ethers

scholarly journals Comparative photophysical behaviour of naphthalene-linked crown ethers and aza crown ethers of varying cavity dimensions

2007 ◽  
Vol 119 (2) ◽  
pp. 175-183 ◽  
Author(s):  
Subhodip Samanta ◽  
Pinki Saha Sardar ◽  
Shyam Sundar Maity ◽  
Anirban Pal ◽  
Maitrayee Basu Roy ◽  
...  
Keyword(s):  
Crown Ethers ◽  
Aza Crown Ethers
Sign in / Sign up

Export Citation Format

Share Document