This article is cited in 2 papers

Communications

Mono- and dichlorido terbium(III) and erbium(III) complexes coordinated by diazabutadiene ligands in different redox states

D. M. Lyubov^ab, A. V. Cherkasov^a, A. A. Trifonov<sup>ab

a</sup> G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Nizhnii Novgorod, Russian Federation
^b A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Moscow, Russian Federation

Abstract: Treatment of 1,4-diazabutadienes (DADs) of formula DippN=C(R)C(R)=NDipp (Dipp = 2,6-Pr₂ⁱC₆H₃, R = H or Me) with 2 or 1 equiv. of potassium metal in THF leads to the corresponding dianions (DAD^2–) or radical anions (DAD^•−), respectively. The subsequent salt metathesis between LnCl₃ (Ln = Tb or Er) and the above dianions affords dimeric monochlorido complexes [(DAD^2–)Ln(THF)₂(μ-Cl)]₂ with bridging chlorine atoms between the lanthanides. The reaction of the radical anion species with LnCl₃, if R = H, gives monomeric dichlorido complexes (DAD^•−)Ln(THF)₂Cl₂; however, if R = Me, the activation of one methyl group occurs, which in the reaction with TbCl3 leads to the formation of a product with shifted double bonds [DippN=C(Me)C(=CH₂)N(Dipp)]Tb(THF)₂Cl₂.

Keywords: lanthanides, terbium complexes, erbium complexes, diimino ligands, diazabutadienes, salt metathesis, structure.

Language: English

DOI: 10.1016/j.mencom.2024.01.013

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