title: Mercury(II)-mediated formation of imide-Hg-imide complexes.
abstract: Three different kinds of cyclic imides with imido protons are chosen to interact with Hg(II): succinimide, the simplest cyclic imide (five-membered ring); phthalimide (conjugated five-membered ring); and 1,8-naphthalimide (conjugated six-membered ring). Based on the results of MS, (1)H-NMR, XPS, IR spectroscopy and fluorescence response analyses, it is suggested that N-unsubstituted cyclic imides react specifically with Hg(II) and form imide-Hg-imide complexes through an imido proton-metal exchange process. The reaction is reversible and occurs rapidly at moderate to high pH. This discovery expands the comprehension of the specific interaction of Hg(II) with the nucleobase thymine, and may open up new possibilities in designing novel ligands for sensing and removing Hg(II) based on cyclic imides.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
authors.forename: Can-liang
authors.initials: CL
authors.lastname: Fang
authors.forename: Jin
authors.initials: J
authors.lastname: Zhou
authors.forename: Xiang-jun
authors.initials: XJ
authors.lastname: Liu
authors.forename: Ze-hui
authors.initials: ZH
authors.lastname: Cao
authors.forename: Di-hua
authors.initials: DH
authors.lastname: Shangguan
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007094:Imides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008628:Mercury / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D011522:Protons; D013050:Spectrometry, Fluorescence; D013055:Spectrophotometry, Infrared; D013941:Thymine / Q000737:chemistry
chemical_list: D056831:Coordination Complexes; D007094:Imides; D011522:Protons; D008628:Mercury; D013941:Thymine