Isomerization and conformational transformations of the N-allyl-N-methylcarbamoyl bridging ligand in the (μ-H)Os3{μ-OCN(Me)CH2CH=CH2}(CO) 10 complex

Article abstract of DOI:10.1007/BF02495524

The (μ-H)Os₃{μ-OCN(Me)CH₂CH=CH₂}(CO) ₁₀ complex containing an allylic fragment in the N,N-dialkylsubstituted carbamoyl bridging ligand was synthesized. The stereochemical behavior of this complex in solution was investigated. As follows from the NMR spectral data, the complex undergoes reversible conformational (about the amide C-N bond) and irreversible allylic isomerization. Both conformers were isolated in the solid state by chromatography at a reduced temperature. The allylic isomerization occurs stereospecifically to produce the (μ-H)Os₃{μ-OCN(Me)CH=CHMe}(CO)₁₀ complex with the transoriented olefinic hydrogen atoms.