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Title: Synthesis and Characterization of Nickel(II) Complex Containing 2-(t-Butylaminomethyl)pyrrole
Authors: Hsieh, Chang-Chih;Chao, Wan-Jung;Horng, Yih-Chern;Lee, Hon-Man
Contributors: 化學系
Keywords: Pyrrole;Nickel complex;Hydrogen bonds;F430
Date: 2009-04
Issue Date: 2013-01-07T02:15:56Z
Publisher: 中國化學學會
Abstract: Two aminopyrroles, 2-(t-butylaminomethyl)pyrrole (HL1) and 2,5-di(t-butylaminomethyl)pyrrole (HL2), were synthesized and the hydrogen-bond interactions were observed in the single-crystal X-ray structures of HL1�HCl and HL2. Bis[2-(t-butylaminomethyl)pyrrole]nickel(II) [Ni(L1)2] was prepared by treatment of the NiCl2 with 2 equiv. of mono-deprotonated HL1 in THF solvent. The solid-state structure of Ni(L1)2 shows the N4-coordinated nickel atom, with a geometry corresponding to a square-planar structure, in which two intramolecular C-H���Ni interactions are present at the axial positions with contact distances of 2.77 A. The complex displays an irreversible reduction response at -0.66 V (vs. Fc+/Fc) in CH3CN. Furthermore, 1H, 13C-HSQC NMR experiments performed at room temperature revealed that the two methylene protons of the chelating L1-1are chemically nonequivalent and one of them is coupled to the amino proton. The coupling constants (JHH') observed are close to the values predicted from the vicinal Karplus correlation diagram.
Relation: J. Chin. Chem., 56(2): 435-442
Appears in Collections:[Department of Chemistry] Periodical Articles

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