Brunner, Henri and Gehart, G. and Nuber, B. and Wachter, Joachim and Ziegler, M. L.
The Reaction of [CP2+NB2(B2H6)2] (CP+ = ETA-ETME4C5) with Sulfur: Stabilization of the Tetrathioborato Ligand in Novel Sulfido Niobium Clusters.
Angewandte Chemie, International Edition in English 31 (8), pp. 1021-1023.
An equilateral Nb3 triangle the edges of which are spanned by a BS4 tetrahedron and bridged by sulfido ligands on the ``underside'' is found in cluster 1. The synthesis of this cluster with an unusual electron configuration shows that tetrathioborates can serve as ligands in organometallic chemistry. Cp+ = eta-5-EtMe4C5.