[EN] USE OF DEPROTONATED PHENYL BRIDGED Β-KETIMINE LITHIUM COMPOUND IN HYDROBORATION REACTION<br/>[FR] UTILISATION DU COMPOSÉ DE β-CÉTIMINE LITHIUM PONTÉ PAR UN PHÉNYLE DÉPROTONÉ DANS UNE RÉACTION D'HYDROBORATION<br/>[ZH] 脱质子苯基桥连β - 酮亚胺锂化合物在硼氢化反应中的应用
Tautomerism in complexes with neutral tetradentate Schiff base ligands: the X-ray structures of cadmium(II) nitrate complexes of bis(acetylacetone)-m-phenylenediimine and bis(acetylacetone)-p-phenylenediimine
作者:Lawrence C. Nathan、Christopher A. Traina
DOI:10.1016/s0277-5387(03)00474-1
日期:2003.11
The Schiff base ligands bis(acetylacetone)-m-phenylenediimine (L1) and bis(acetylacetone)-p-phenylenediimine (L2) can be made to coordinate to Cd(II) without deprotonation. The products have the stoichiometries Cd(L1)(2)(NO3)(2) and Cd-2(L-2)(3)(NO3)(4). Characterization by X-ray crystallography reveals polymeric structures in which Cd is eight-coordinate in the former and seven-coordinate in the latter. The nitrate groups are bidentate. The Schiff base ligands coordinate to Cd only through oxygen atoms and function as bridging bidentate keto-amine tautomers such that the NH...O hydrogen bonding networks present in the free ligands are preserved. (C) 2003 Elsevier Ltd. All rights reserved.