Abstract
Complexes of transition metals with heavy analogs of carbenes (tetrylenes) as ligands have been studied now for some 40 years. The current review attempts to provide an overview about complexes with non-stabilized (having no π-donating substituents) germylenes, stannylenes, and plumbylenes. Complexes are known for groups 4–11. For groups 6–10 not only examples of monodentate tetrylene ligands, but also of bridging ones are known. While this review covers almost 200 complexes, the field in general has been approached only very selectively and real attempts for systematic studies are very scarce. Although some isolated reports exist which deal with the reactivity of the tetrylene complexes most of the so far published work concentrates on synthesis and characterization.
About the authors
Judith Baumgartner studied technical chemistry at Graz University of Technology, Austria, where she also carried out her PhD work (1991–1992) with Prof. Alois Fürstner, working on the use of activated metals in organic synthesis. She continued to work on organometallic chemistry in Graz and in 1998 spent a year as Schrödinger Post-Doctoral Research Fellow in the laboratory of Prof. Peter Vollhardt at the University of California, Berkeley, working on C-H activation employing novel organo-iridium chemistry. After the birth of her third daughter in 2000 she accepted an offer to set up the single crystal diffraction facility at the Institute of Inorganic Chemistry. Her interests are currently centred on polysilanes, tetrylenes, Group 14 derivatives of transition metals in different oxidation states, as well as of lanthanid complexes bearing a metal silyl bond.
Christoph Marschner, a native of Linz, Austria, was born in 1963. He studied technical chemistry at Graz University of Technology, Austria (1983–1988), where he also carried out his PhD work (1989–1992) in synthetic organic chemistry. After his work with Professor Barry M. Trost at Stanford University as a Schrödinger post doctoral research fellow he returned to Graz as an assistant professor at the Institute of Inorganic Chemistry and started independent research on organosilicon chemistry. He spent a year (1998) at the University of California, Berkeley in the group of Professor T. Don Tilley. In 1999 he was awarded the START-prize of the Austrian government for his work on polysilanes. After finishing his habilitation in 2000 he was promoted to tenured associate professor in 2001. His research interests include main group (especially Group 14) and transition metal organometallic chemistry. The main emphasis of his research over the last decade was put on silyl anion and polysilane chemistry.
Acknowledgments
Support was provided by the Austrian Fonds zur Förderung der wissenschaftlichen Forschung (FWF) via project P-25124.
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