Add time:07/21/2019         Source:sciencedirect.com

An unusual binuclear complex, Ru2(CO)4[μ-Me3Si-NSN-COSiMe3]2, is formed when bis(trimethylsilyl) sulfur diimide, S(NSiMe3)2, reacts with Ru3(CO)12 in boiling hexane. The X-ray structure analysis reveals a centrosymmetric molecule containing two [Ru(CO)2] units which are incorporated into a pentacyclic system with a ten-membered ring as largest perimeter. This ring possesses a chair conformation, it contains two transannular Ru-N bonds and, on the perimeter, two RuNS triangles. Apparently a ruthenium-coordinated CO ligand is inserted into a N-SiMe3 bond of S(NSiMe3)2; a carbene-type ligand is thus formed, which is both a chelating and a bridging ligand. The coordinated SN bond of the original sulfur diimide is lenghtened to 1.721(3) Å.

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