Polarization and Covalency in Alkali – Tetralide Clusters
نویسنده
چکیده
In this paper we discuss the structure of A 4 M 4 alkali(= A)–tetralide (= M) (= group 14) clusters. Without polarization these polyions consist of a central tetralide tetrahedron with each face capped by an alkali ion. We show that ionic polarization can lead to quite different cluster structures by breaking up of the tetralide tetrahedron into pairs M 2 , and it can even destroy covalent bonds in these clusters. Consequences for the structure of the solid, liquid and amorphous phase are discussed.
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تاریخ انتشار 2008