An Unprecedented, Reversible Coordination Mode Rearrangement: Eta(3)(B-H) Vs. Eta(1)(Sn) Stanna-Closo-Dodecaborate Coordination

The synthesis of the ruthenium stanna-closo-dodecaborate complex [Bu3MeN](2)[Ru(dppb)(MeCN)(2)(SnB11H11)(2)] by an unprecedented, reversible eta(3)(B-H) to eta(1)(Sn) rearrangement of [Bu3MeN](2)[Ru(dppb)(SnB11H11)(2)] is described and the product is characterized by multinuclear NMR spectroscopy and single-crystal X-ray diffraction.