Neodymium complex obtained from reductive-coupling of carbodiimide: Synthesis and structure of [(Cp″)₂Nd(NR)₂C—C(NR)₂Nd(Cp″)₂]

Abstract

A bimetallic oxalamidino complex of neodymium [(Cp″)₂Nd(NR)₂C—C(NR′)₂Nd(Cp″)₂][Cp″=η ⁵-C₅H₃-1,3-(SiMe₃)₂, R=C₆H₁₁](2) was obtained via reaction between NdI₂ and carbodiimide[RN=C=NR] (R=C₆H₁₁)(molar ratio 1:1) in tetrahydrofuran(THF) solution, followed by the addition of [KCp″(THF)](1)(molar ratio 1:2) at a low temperature through a reductive-coupling reaction with carbodiimide. The structure of the intermediate product was confirmed by means of elemental analysis, ¹H NMR and ¹³C NMR. Characterization of the product by single crystal X-ray diffraction confirmed the diamidinate type of structure.

Keywords

Lanthanide chemistry / Neodymium / Diamidinate / Carbodiimide / Reductive-coupling reaction

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