Dynamic Behavior of an N ‐Metalated β‐Enaminoimine Complex − Preparation of N ‐Phosphanylenamine and β‐Enaminoimine Derivatives

Autor:	Alexandrine Maraval, Bruno Donnadieu, Alain Igau, Krzysztof Owsianik, Yannick Coppel, Jean-Pierre Majoral, Maria Zablocka, Damien Arquier
Rok vydání:	2003
Předmět:	Inorganic Chemistry chemistry.chemical_classification Transmetalation Crystallography chemistry Proton Hydrogen bond Intramolecular force Inorganic chemistry Chelation Nuclear magnetic resonance spectroscopy Crystal structure Coordination complex
Zdroj:	European Journal of Inorganic Chemistry. 2003:960-968
ISSN:	1099-0682 1434-1948
DOI:	10.1002/ejic.200390128
Popis:	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)
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d6ad0cfb650c262c0f1970d99d29e693 https://doi.org/10.1002/ejic.200390128 Zobrazit plný text záznamu Plný text