Synthesis of New Ketonyl Palladium(II) and Platinum(II) Complexes with Nitrogen-Donor Ligands. Crystal Structure of [Pt{CH2C(O)Me}2(bpy)]

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• 作者：José ; Vicente ; José ; Antonio Abad ; Marí ; a-Teresa Chicote ; Maria-Dolores Abrisqueta ; José ; -Angel Lorca ; and M. Carmen Ramí ; rez de Arellano
• 刊名：Organometallics
• 出版年：1998
• 出版时间：April 13, 1998
• 年：1998
• 卷：17
• 期：8
• 页码：1564 - 1568
• 全文大小：85K
• 年卷期：v.17,no.8(April 13, 1998)
• ISSN：1520-6041

文摘

Complexes [MCl₂L₂] (M = Pd, Pt;L₂ = 2,2'-bipyridine (bpy) orMe₂N(CH₂)₂NMe₂(tmeda))react with ketones MeC(O)R (R = Me, Et) in the presence of bases(Ag₂O or M'OH (M' =Na, K)) to give the new types of ketonyl palladium(II) andplatinum(II) complexes [M{CH₂C(O)R}ClL₂] (M = Pd, L₂ =N,N,N',N'-tetramethylethylenediamine= tmeda; M = Pt, L₂ =2,2'-bipyridine = bpy) and[Pt{CH₂C(O)R}₂L₂](R = Me, Et, L₂ = bpy). Oxidativeadditionof chloroacetone on [Pt(dba)₂] in the presence ofbpy also yields[Pt{CH₂C(O)R}ClL₂].[Pd{CH₂C(O)Me}Cl(tmeda)] reacts withPhNHNH₂ in the presence of TlOTf (OTf =CF₃SO₃) togive the cyclometalated complex[Pd{CH₂C(Me)=NNH(Ph)}(tmeda)]OTf.The crystal structure of[Pt{CH₂C(O)Me}₂(bpy)]has been determined. The platinum atom is in adistortedsquare-planar environment. The strong trans influence of theacetonyl ligand promotes thelengthening of both Pt-N bonds (2.082(3) and 2.091(3) Å)with concomitant narrowing ofthe NPtN bond angle (78.89(13)).