Tantalum(III)

Abstract
The reaction of tantalum tetrachloride with acetonitrile yields the diamagnetic dimer [TaCl3(MeCN)2]2. From these acetonitrile solutions similar diamagnetic complexes TaCl3(bipyridyl) and TaCl3(o-phenanthroline), and the paramagnetic tris (dibenzoylmethanato) tantalum(III) were prepared. These are the first compounds of tantalum (III) to be characterised.

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