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  • 02월 23일 15시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Acidity Scale for Metal Oxides and Sanderson’s Electronegativities of Lanthanide Elements

2009년 2월 17일 15시 04분 59초
금27B9구 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 12시 : 30분
재료화학 - Current Topics in Materials Sciences
저자 및
정낙천, 이지선, 윤경병
서강대학교 화학과, Korea
Metal oxides are widely used for various purposes. Their surface acidities often sensitively affect their properties. Accordingly, their applications can be more rationally designed and their performances can be more clearly understood if there is a general scale which quantitatively compares their acidities and if the factors that govern the acidities are known. This presentation reports that NM-M serves as a general acidity scale for metal oxides, where NM and δM represent the formal oxidation state and the Sanderson’s partial charge of the metal, respectively, in the compounds. Electronegativity (EN) is one of the most important fundamental properties of an atom which represents ‘the power of an atom in a compound to attract electrons to itself’. Among various EN scales which have been developed, the Sanderson’s scale and his EN equalization principle have been very useful in chemistry for various reasons. However, due to the lack of experimental data on the homonuclear bond distances and bond energies, the Sanderson’s EN scale has not been extended to lanthanide (Ln) elements during the last five decades despite the fact that Ln-containing compounds are widely used in academia and industry for various purposes. This presentation also reports the Sanderson’s electronegativity values of lanthanide series elements.