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- Title
Structural variation from trinuclears to 1D chains: Syntheses, structures and properties.
- Authors
Yin, Xiu‐Ju; Zhu, Long‐Guan
- Abstract
Five complexes [Co3(Hpmad)6]·(4‐sb)2·(CH3COO)2·(H2O)2 (1), [Co3(Hpmad)6]·(3‐sb)2·(CH3COO)2·(H2O)0.5 (2), [Co(Hpmad)2(4‐sb)]n (3), [Co(Hpmad)2(3‐sb)]n (4) and {[Co(Hpmad)(SO4)(H2O)2]·H2O}n (5) [Hpmad is 2‐pyrimidineamidoxime, H2(4‐sb) is 4‐sulfobenzoic acid and H2(3‐sb) is 3‐sulfobenzoic acid], were prepared at room temperature. Complexes 1–5 were characterized by elemental analyses, single crystal X‐ray diffractions, powder X‐ray diffractions, infrared spectra, thermogravimetric analyses, fluorescence spectra and magnetic susceptibility measurements. Complexes 1 and 2 possess the linear trinuclear Co2+ structures. Complexes 3 and 4 exhibit similar one‐dimensional (1D) chains. Complex 5 comprises the 1D helical chain. The change of anion in cobalt salt from CH3COO− to Cl− to SO42− leads to the structural evolution from the linear trinuclear Co2+ structure to the 1D chain to the 1D helical chain. Complexes 1–5 exhibit the Hpmad‐based emissions. The magnetic properties of 1–5 were also investigated. Five Co (II) complexes based on 2‐pyrimidineamidoxime and sulfobenzoic acid were obtained. The change of anion in cobalt salt from CH3COO− to Cl− to SO42− leads to the structural evolution from the linear trinuclear structure to 1D chain to 1D helical chain. The fluorescent and magnetic properties were also studied.
- Subjects
X-ray powder diffraction; MAGNETIC susceptibility measurement; FLUORESCENCE spectroscopy; MAGNETIC properties; INFRARED spectra
- Publication
Applied Organometallic Chemistry, 2019, Vol 33, Issue 4, pN.PAG
- ISSN
0268-2605
- Publication type
Article
- DOI
10.1002/aoc.4796