Ligands polypyrazolylborate

S. Trofimenko, Scorpionates—The Coordination Chemistry of Polypyrazolylborate Ligands, Imperial College Press, London, 1999. 

Trofimenko, S. Scorpionates — The Coordination Chemistry of Polypyrazolylborate Ligands 1999, Imperial College Press London. 

Despite the vast interest shown by coordination chemists in polypyrazolylborate ligands (17) since their discovery in 1966 few complexes of chromium(III) with these ligands have been mentioned in the literature. The complex [ B(pz)4 2Cr]PF6 (147) may be prepared by either of the routes outlined in Scheme 89.657... 

The extraordinary success of polypyrazolylborate ligands (scorpionates) was summarized (93CRV943). 

By far the most common synthesis technique is to introduce polypyrazolylborate ligands by replacing halide groups. As might be expected this leads to a great variety of complexes. In some... 

Trofimenko69 has reviewed the preparation of polypyrazolylborate ligands and the syntheses of metal complexes containing such ligands. An update has also appeared.70... 

Table 7 Yb NMR chemical shifts for polypyrazolylborate ligand complexes...

The extraordinary success of polypyrazolylborate ligands (scorpionates) <93CRV943> was summarized with authority by their discoverer, Trofimenko. The bibliography is complete until 1992 including many references of 1993 as well as some unpublished results. In the present work, references already reported by Trofimenko may be mentioned, the main effort being devoted to new publications. 

Polypyrazolylborate Ligands.14 Anionic ligands of the types (21-XXX) and (21-XXXI) are relatively easy to prepare and have some interesting and... 

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