ionophores by crown ethers exhibit extinction coefficients that are dependent on the chain lengths of chained cations. Aza-crown ether Thia-crown ether Cryptand...
13 KB (1,460 words) - 00:03, 11 October 2024
In organic chemistry, an aza-crown ether is an aza analogue of a crown ether (cyclic polyether). That is, it has a nitrogen atom (amine linkage, −NH−...
6 KB (593 words) - 16:20, 17 February 2024
Cyclen (1,4,7,10-tetraazacyclododecane) is a aza-crown ether with the formula (CH2CH2NH)4. It is a white solid. Being structurally simple, symmetrical...
6 KB (438 words) - 00:53, 17 December 2023
7-Triazacyclononane, known as "TACN" which is pronounced "tack-en," is an aza-crown ether with the formula (C2H4NH)3. TACN is derived, formally speaking, from...
7 KB (651 words) - 02:59, 20 June 2022
oxide which is specific for the lithium cation. 98%, 2018 Crown ether Cyclen, a similar molecule with N atoms (aza groups) instead of O atoms (ethers)...
4 KB (311 words) - 10:55, 1 June 2023
compound with the formula (NHCH2CH2NHCH2CH2CH2)2. Classified as an aza-crown ether, it is a white solid that is soluble in water. As a macrocyclic ligand...
4 KB (323 words) - 22:58, 29 January 2024
metal ion is inserted when a complex is formed. For example, the crown ether 18-crown-6 forms much stronger complexes with the potassium ion, K+ than with...
60 KB (7,604 words) - 21:10, 31 July 2024
1,4,7-Trimethyl-1,4,7-triazacyclononane is the aza-crown ether with the formula (CH2CH2NCH3)3. This colorless liquid is the N-methylated derivative of...
5 KB (344 words) - 08:45, 24 January 2024
templating. Iron(tetraporphyriinato) chloride cyclam is a popular aza-crown ether The macrocyclic effect is the high affinity of metal cations for macrocyclic...
8 KB (916 words) - 02:19, 17 February 2024
Isuru R. (21 December 2021). "Superatomic Chelates: The Cases of Metal Aza-Crown Ethers and Cryptands". Inorganic Chemistry. 61 (1): 579–585. doi:10.1021/acs...
17 KB (1,783 words) - 06:51, 23 July 2024
the first to demonstrate the increased stability of per-alkylated aza crown ether analogues under dissolving metal reduction conditions. This not only...
21 KB (2,192 words) - 12:45, 19 October 2024
gate using an aza-crown ether receptor and sodium and potassium ions as the inputs. Either of the two ions could bind to the crown ether, causing the PET...
40 KB (4,515 words) - 01:35, 4 September 2024
clathrochelate complex is one example. The phosphorus analogue of an aza crown can be prepared by a template reaction. Where it is not possible to isolate...
6 KB (630 words) - 02:49, 27 January 2024
inorganic cyclic compound (aromatic). Azetidine, a 4-membered nitrogen (aza) heterocyclic compound, methylene hydrogen atoms implied, not shown (non-aromatic)...
28 KB (3,302 words) - 14:18, 13 November 2024
40% in the urine. Finasteride, also known as 17β-(N-tert-butylcarbamoyl)-4-aza-5α-androst-1-en-3-one, is a synthetic androstane steroid and 4-azasteroid...
74 KB (7,439 words) - 22:39, 25 October 2024
solvent and on the cation in the alkoxide catalyst. The presence of crown ether in the reaction medium can increase the reactivity of the hydrazone anion...
40 KB (4,211 words) - 08:09, 12 October 2024
Commun. (11): 1272–1273. doi:10.1039/B302670A. PMID 12809226. [Cu7(H){S2C(aza-15-crown-5)}6]+ Liao, Ping-Kuei; Fang, Ching-Shiang; Edwards, Alison J.; Kahlal...
202 KB (676 words) - 05:54, 26 August 2024
pyruvic acid MeSH D02.355.291.205 – ciguatoxins MeSH D02.355.291.308 – crown ethers MeSH D02.355.291.411 – epoxy compounds MeSH D02.355.291.411.400 – epichlorohydrin...
192 KB (16,705 words) - 16:43, 9 February 2024