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Updated: May 5, 2026
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Diversity of the structures in a distannene complex and its reduction to generate a six-membered Ti(2)Sn(4) ring
Takuya Kuwabara1, Jing Dong Guo, Shigeru Nagase
1Department of Chemistry, Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama-city, Saitama 338-8570 (Japan).
Abstract:
In contrast to olefin complexes, their congeners of heavier elements display various coordination modes, and their complexes may be present as bis(metallylene) complexes, with side-on coordination, as metallacyclopropanes, or as π complexes. In the course of our studies on the reactivity of dilithiostannoles towards transition-metal reagents, three-membered TiSn2 and six-membered Ti2 Sn4 ring complexes were obtained. According to its geometric parameters, NMR analysis, and theoretical calculations, the TiSn2 complex cannot be categorized into any of these previously described bonding modes. Therefore, a novel resonance structure has been proposed for a complex that has a delocalized σ-orbital over the TiSn2 ring to understand its electronic structure. The mechanism for the formation of the Ti2 Sn4 ring complex and its EPR spectrum are also discussed.
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