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Slavi C. Sevov

Publications and source records attributed to Slavi C. Sevov.

6 recordsLinked to original sources
PubMed2001

arachno-

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Journal Article↗
PubMed1998

Synthesis and Structure of the Zintl-Phase K(4)Pb(9) Containing Isolated Pb(9)(4)(-) Clusters of Two Different Geometries.

The first nine-atom deltahedral clusters of lead in the solid state are found in the Zintl-phase K(4)Pb(9). The compound crystallizes in the monoclinic space group P2(1)/m, Z = 4, with a = 9.648(3) Å, b = 13.243(5) Å, c = 15.909(8) Å, and beta = 103.24(4) degrees. The isolated Pb(9)(4)(-) clusters are of two different geometries, a monocapped square antiprism and an elongated tricapped trigonal prism.

Journal Article↗
PubMed1997

Synthesis, Characterization, and Bonding of Heteroatomic Clusters: Na(13)Cd(20)E(7) (E = Pb, Sn), a Further Example of a Structure Containing Empty Icosahedra without an Element of Group 13.

The compounds Na(13)Cd(20)E(7) (E = Pb, Sn) were made in nearly 100% yield by quenching the melts of appropriate mixtures of elements sealed in niobium containers. They crystallize in the cubic space group Im&thremacr;, Z = 4, with a = 15.992(2) and 15.790(4) Å for E = Pb and Sn, respectively. The Cd/E part of the structure is a framework of heavily fused monocapped truncated trigonal prisms. Twelve-bonded icosahedra are nested in cavities of the framework. This is the second example of a structure containing empty icosahedra made without the participation of an element of the boron group. The sodium cations occupy the space between the clusters and inside the 13-atom polyhedra.

Journal Article↗