Slavi C. Sevov

Slavi C. Sevov

Inorganic & Solid State Chemistry

Biography

2002-present
Professor, University of Notre Dame
1999-2002
Associate Professor, University of Notre Dame
1995-1999
Assistant Professor, University of Notre Dame
1993-1995
Postdoctoral Research Associate, University of Chicago
1993
Ph.D. in Chemistry, Iowa State University
1985
M.Sc. in Chemistry, University of Sofia, Bulgaria
1983
B.S. in Chemistry, University of Sofia, Bulgaria

Selected Awards

1999
The Exxon-Mobil Faculty Award in Solid State Chemistry
1997
NSF CAREER Award
1995
Camille and Henry Dreyfus New Faculty Award

Research Interests

Chemistry of Main-Group Metals and Semimetals in Negative Oxidation States

The heavier members of Groups 14 and 15, both metals and semimetals, are known for their chemistry in various positive oxidation states. What we are interested in is how they behave when forced to accept electrons and become negatively charged, i.e. when in negative oxidation states. It turns out that such atoms tend to cluster together and form: nine-atom deltahedral clusters E94- for Si, Ge, Sn, and Pb; seven-atom species E73- for P, As, and Sb; etc. We have studied extensively the reactivity of Ge94- towards various reagents and have found, to our and many other people’s surprise, that they can be readily functionalized with various groups and form [R-Ge9-R]2- and [Ge9-R]3- for R = alkyl, alkenyl, main-group and transition-metal organometallic fragments, etc. Furthermore, they can oligo- and poly-merize to form dimers trimers, tetramers, and infinite chains, for example [Ge9-Ge9]6-, [Ge9=Ge9=Ge9]6-, and [-(Ge92-)-], and they can be centered by transition-metal atoms. The bismuth fragments, on the other hand, can react with various organometallic compounds and form mixed main-group/transition-metal clusters such as [Bi3Mo2(CO)6]3-, [Bi3Ni4(CO)6]3-, [Bi4Ni4(CO)6]2-, [Bi3Ni6(CO)9]3-, and the Ni-centered [Ni@{Bi6Ni6(CO)8}]4-.

Hydrothermal Exploratory Synthesis of Hybrid Organic-Inorganic Materials with Framework Structures

We are interested in compounds with open-framework structures as well as compounds that contain large multiatomic molecular anions built of transition-metal, borate, and phosphate or phosphonate groups. We have synthesized the first such open-framework borophosphate, CoB2P3O12(OH)•en where ethylenediamine (en) is the organic template, and the first borophosphate templated by a transition-metal complex, [Co(en)3][B2P3O11(OH)2]. Also, we have synthesized the first large borophosphate polyoxometalate, [MoV5MoVI7O30(BPO4)2(PO4)3(HPO4)3]8- and its phenyl-functionalized version [MoV5MoVI7O30(BPO4)2(Ph-PO4)6]5-. Other systems of interest include extended frameworks made of transition-metal centers connected by organic linkers with two or more functional groups such as di-phosphonates, carboxylate-phosphonates, boronate-phosphonates, carboxylate-boronates, etc.

Recent Papers

  • Perla, L.G.; Sevov, S.C. "A Stannyl-Decorated Zintl Ion [Ge18Pd3(SniPr3)6]2-: Twinned Icosahedron with a Common Pd3-Face or Eighteen-Vertex Hypho-Deltahedron with a Pd3-Triangle Inside?" J. Am. Chem. Soc. 2016, 138(31), 9795-9798.
  • Li, F.; Munoz-Castro, A.; Sevov, S.C. "[(Me3Si)Si]3EtGe9Pd(PPh3), a Penta-Functionalized Deltahedral Zintl Cluster: Synthesis, Structure, and Solution Dynamics." Angew. Chem. Int. Ed. 2016, 55, 8630.
  • Perla, L.G.; Sevov, S.C. "Cluster Fusion: Face-Fused Nine-Atom Deltahedral Clusters in [Sn14Ni(CO)]4-n" Angew. Chem. Int. Ed. 2016, 55, 6721.
  • Perla, L.G.; Oliver, A.G.; Sevov, S.C. "Bi7(3-): The Missing Family Member, Finally Isolated and Characterized." Inorg. Chem. 2015, 54(3), 872-875.
  • Li, F.; Sevov, S.C. "Synthesis, Structures, and Solution Dynamics of Tetrasubstituted Nine-Atom Germanium Deltahedral Clusters." J. Am. Chem. Soc. 2014, 136(34), 12056-12063.
  • Munoz-Castro, A.; Sevov, S.C. "Trimetallic deltahedral Zintl  ions [Sn9-m-nGemBin]((4-n)-) for n=1-4 and m=0-(9-n): a theoretical survey with prediction and rationalization of the possible structures." Phys. Chem. Chem. Phys. 2013, 15(3), 986-991.

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