Switching by Photochemical trans鈥揷is Isomerization of Azobenzene Substituents in Organoplatinum Complexes

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• 作者：Mohamed E. Moustafa ; Matthew S. McCready ; Richard J. Puddephatt
• 刊名：Organometallics
• 出版年：2012
• 出版时间：September 10, 2012
• 年：2012
• 卷：31
• 期：17
• 页码：6262-6269
• 全文大小：459K
• 年卷期：v.31,no.17(September 10, 2012)
• ISSN：1520-6041

文摘

A diimine ligand, LL = 2-C₅H₄NCH鈺怤-4-C₆H₄N鈺怤Ph, which carries a trans-azobenzene substituent, forms the dimethylplatinum(II) complex [PtMe₂(LL)], which undergoes trans oxidative addition with MeI, PhCH₂Br, Br₂, and I₂ to give the corresponding organoplatinum(IV) complexes [PtIMe₃(LL)], [PtBrMe₂(CH₂Ph)(LL)], [PtBr₂Me₂(LL)], and [PtI₂Me₂(LL)], respectively. The ligand and the platinum(II) and platinum(IV) complexes are shown to undergo trans鈥揷is isomerization of the azobenzene substituent upon irradiation, and the cis isomers then underwent slow thermal isomerization back to the more stable trans isomers.