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Two two‐dimensional supramolecular copper(II) and cobalt(III) complexes derived from a new quinazoline‐type ligand: Syntheses, structures, and spectral, thermal, electrochemical and antimicrobial activity studies
Author(s) -
Chai LanQin,
Tang LiJian,
Zhang KongYan,
Zhang JianYu,
Zhang HongSong
Publication year - 2017
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3786
Subject(s) - chemistry , supramolecular chemistry , crystallography , ligand (biochemistry) , cobalt , copper , crystal structure , electrochemistry , stereochemistry , magnetic susceptibility , proton nmr , carbon 13 nmr , inorganic chemistry , organic chemistry , biochemistry , receptor , electrode
Two two‐dimensional supramolecular copper(II) and cobalt(III) complexes, Cu(L 1 ) 2 ( 1 ; HL 1 = 2‐hydroxy‐3‐methoxybenzaldehyde oxime) and [Co(L 2 ) 2 ] 2 ⋅2CH 3 COOCH 2 CH 3 ( 2 ; HL 2 = 1‐(2‐{[( E )‐3‐methoxy‐2‐hydroxybenzylidene]amino}phenyl)ethanone oxime), have been synthesized via complexation of Cu(II) nitrate trihydrate and Co(II) acetate tetrahydrate with HL. A plausible reaction mechanism for the formation of HL 1 is proposed. HL was synthesized and characterized using infrared, 1 H NMR and 13 C NMR spectra, as well as elemental analysis. Complexes 1 and 2 were investigated using single‐crystal X‐ray diffraction and have a 2:1 ligand‐to‐metal ratio. Different geometric features of both complexes are observed. In their crystal structures, 1 and 2 form infinite two‐dimensional structures and 2 forms a three‐dimensional supramolecular framework. Electron paramagnetic resonance spectra of 1 and 2 were also investigated. Moreover, thermal and electrochemical properties and antimicrobial activity of 2 were also studied. In addition, the calculated HOMO and LUMO energies show the character of complex 1 .