The group 7 metal carbonyl complexes from a stable heteroleptic silylene PhC(NtBu)2SiNPh2

Abstract

Two silylene transition metal complexes were prepared by reacting stable N-heterocyclic silylene L {L = PhC(NtBu)₂SiNPh₂}with Mn₂(CO)₁₀ and Re₂(CO)₁₀ respectively in a 2 : 1 ratio to yield [L₂Mn(CO)₄]⁺[Mn(CO)₅]⁻ (1) and [L₂Re(CO)₄]⁺[Re(CO)₅]⁻ (2). Both complexes 1 and 2 were characterized by NMR spectroscopy, EI-MS spectrometry and elemental analysis. The molecular structures of complexes 1 and 2 were established by single crystal X-ray analysis.