Activation of ortho C-H bond by nickel(II) acetate or sodium tetrachloropalladate(II) in naphthyl imino derivatives of azobenzene

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• 作者：Debprasad Patra^a ; ^b ; Poulami Pattanayak^a ; Jahar Lal Pratihar^a ; ^c ; Surajit Chattopadhyay^a ; ^{scha8@rediffmail.com}
• 关键词：1-{[2-(Arylazo)phenyl]iminomethyl}-2-naphthol ; Orthometallation ; O-insertion ; Luminescent property
• 刊名：Polyhedron
• 出版年：2013
• 出版时间：4 March, 2013
• 年：2013
• 卷：51
• 期：Complete
• 页码：46-53
• 全文大小：888 K

文摘

The reactions of 1-{[2-(arylazo)phenyl]iminomethyl}-2-naphthol, H₂L_nap [where H represents the dissociable proton upon complexation and aryl groups of H₂L_nap are phenyl for H₂L¹_nap; p-methyl phenyl for H₂L²_nap and p-chloro phenyl for H₂L³_nap] with nickel acetate tetra hydrate or disodium tetrachloropalladate in methanol afforded M-C(aryl) bonded species of composition [M(L_nap)] (M = Ni(II) and Pd (II)). The dinegative (L_nap)^2? ligands bind the Ni(II) or Pd(II) in tetradentate (C, N, N, O) fashion in distorted square planar geometry. Ligands and complexes were characterized by spectroscopic methods. The X-ray structures of H₂L¹_nap, [Ni(L¹_nap)] and [Pd(L¹_nap)] were determined to authenticate the characterization. Reactions with metachloroperbenzoic acid (mCPBA), TBHP and hydrogen peroxide leading to oxygen insertion into the M-C bond have been examined. Luminescent properties of ligands and complexes have been reported.