A persistent manganese carbonyl radical with infrared absorption and fluorescence modality

作者：Poh Hwa Tiong; Kee Jun Wei; Chwee Tsz Sian; Fan Wai Yip^*

来源：Journal of Organometallic Chemistry, 2014, 759: 11-14.

DOI：10.1016/j.jorganchem.2014.02.015

• Manganese carbonyl radical
• Aminoanthracene
• Fluorescence

A manganese carbonyl radical complex, Cp*Mn(CO)2(2-aminoanthracenyl) was prepared and characterised using IR, ESR and UV-visible absorption and emission spectroscopic methods. The radical persists in solution for more than one week and its ESR spectrum shows a sextet of lines which is consistent with a metal-centred radical complex. Two broad intense electronic absorption bands were observed, corresponding to the 2-aminoanthracene ligand-to-ligand transition (300-420 nm) and a ligand-to-metal charge transfer (LCMT) transition centred at 685 nm. Cp*Mn(CO)2(2-aminoanthracenyl) exhibits fluorescence with a quantum yield of 0.6 and halflife of 6.4 ns upon excitation at 350 nm.

• 出版日期2014-6-1