Volume 85 Issue 28 | p. 33 | Concentrates
Issue Date: July 9, 2007

Zinc and Gallium Neighbors Join Hands

Department: Science & Technology
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Zinc and gallium, chemically similar elements nestled next to each other in the periodic table, finally have been convinced to join together to form the first structurally characterized complexes containing a zinc-gallium bond (Dalton Trans., DOI: 10.1039/b706402k). Cameron Jones of Australia's Monash University, along with Richard P. Rose and Andreas Stasch of Cardiff University, in Wales, prepared the complex shown and a complex with one zinc group and two gallium groups by reacting a gallium heterocyclic precursor with zinc heterocyclic complexes. The chemistry is part of a larger study by Jones and coworkers exploring the analogy between the cyclic gallium precursor and both N-heterocyclic carbene ligands and cyclic boron ligands, both of which are widely used to form transition-metal catalysts. In the past year, the gallium precursor has permitted the team to prepare a range of novel gallyl complexes, including compounds containing Ga-Sn, Ga-Cu, and Ga-Nd bonds. The researchers currently are studying the reactivity of the zinc gallyl complexes toward unsaturated organic molecules, such as alkynes, alkenes, and aldehydes, Jones says.

 
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