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Synthesis of the nickel(II) complexes bearing tetradentate thiosemicarbazone through Michael addition of n-alcohols. Experimental, theoretical characterization and antioxidant properties   
Yazarlar
Doç. Dr. Tuncay KARAKURT
Kırşehir Ahi Evran Üniversitesi, Türkiye
Buşra Kaya
İstanbul Üniversitesi-Cerrahpaşa, Türkiye
Onur Şahin
Sinop Üniversitesi, Türkiye
Bahri Ülküseven
İstanbul Üniversitesi-Cerrahpaşa, Türkiye
Özet
New thiosemicarbazone derivative, 3-benzylidene-2,4-pentanedione-S-methyl-thiosemicarbazone hydrogen iodide (TSC), was synthesized and characterized by elemental analysis, IR, H-1 NMR and single crystal X-ray diffraction. The novel nickel(II) complexes, Ni1-4, were synthesized from the TSC and salicylaldehyde by template effect of nickel(II) ion. The reactions were accomplished by a proton provided from the addition of alcohols which are methyl, ethyl, propyl and allyl for complexes Ni1, 2, 3 and 4, respectively. Spectroscopic data indicated that the formation of the complexes occurred through Michael addition of the alcohols to the 2,4-pentanedione moiety of the TSC. Distorted square planar structures of complexes Ni1 and Ni2 were confirmed by single crystal X-ray diffraction. In addition, the detailed computations were performed by using the theory DFT for experimentally obtained structures of the TSC, Ni1 and Ni2. The antioxidant property of the TSC and nickel(II) complexes along with the standard ascorbic acid was studied by using DPPH radical scavenging and Cupric Reducing Antioxidant Capacity (CUPRAC) assays.
Anahtar Kelimeler
Thiosemicarbazone | Nickel(II) complexes | Micheal addition | DFT | Antioxidant activity
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı STRUCTURAL CHEMISTRY
Dergi ISSN 1040-0400
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q3
Makale Dili İngilizce
Basım Tarihi 08-2022
Cilt No 33
Sayı 4
Sayfalar 1007 / 1017
Doi Numarası 10.1007/s11224-022-01908-0
Makale Linki http://dx.doi.org/10.1007/s11224-022-01908-0