565238-31-5Relevant academic research and scientific papers
Dynamic behavior of an N-metalated Β-enaminoimine complex - Preparation of N-phosphanylenamine and Β-enaminoimine derivatives
Maraval, Alexandrine,Owsianik, Krzysztof,Arquier, Damien,Igau, Alain,Coppel, Yannick,Donnadieu, Bruno,Zablocka, Maria,Majoral, Jean-Pierre
, p. 960 - 968 (2007/10/03)
Variable-temperature NMR spectroscopy of the β-enaminoimine complex 2 showed a dynamic process which was attributed to an internal fluxional aldimido N-zirconated π-linear/σ-bent structure. Such an internal rearrangement has been previously proposed to occur in these systems but never observed. We have prepared a variety of (N-phosphanyl-β-enamino)imine ligands using the hydrozirconation/transmetalation reaction of malonodinitrile compounds RCH(CN)2 (R = H, PPh2). In addition to their potential uses in coordination chemistry, these systems are good tools for the study of intramolecular hydrogen bonding. The X-ray crystal structure of 14 at 180 K shows an unsymmetrical system with the N(H) proton localized on one of the two chelating nitrogen atoms, consistent with the existence in solution of a low barrier proton transfer process with a double-well potential. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.
