Microcalorimetric study on host-guest complexation of naphtho-15-crown-5 with four ions of alkaline earth metal / 浙江大学学报(英文版)(B辑:生物医学和生物技术)
Journal of Zhejiang University. Science. B
; (12): 69-73, 2005.
Article
in En
| WPRIM
| ID: wpr-316374
Responsible library:
WPRO
ABSTRACT
Thermodynamic parameters of complexation of naphto-15-crown-5 with four alkaline earth ions in aqueous media was determined using titration microcalorimetry at 298.15 K. The stability of the complexes, thermal effect and entropy effect of the complexation is discussed on the basis of the guest ions structure and the solvent effect. The stability constants tendency to vary with ion radius was interpreted. Complex of naphtha-15-crown-5 with calcium ion is very stable due to the synergism of static electric interaction and size selectivity between the host and the guest.
Full text:
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Index:
WPRIM
Main subject:
Calorimetry
/
Chemistry
/
Crown Ethers
/
Macromolecular Substances
/
Ions
/
Metals, Alkaline Earth
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Methods
/
Microchemistry
Language:
En
Journal:
Journal of Zhejiang University. Science. B
Year:
2005
Type:
Article