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https://hdl.handle.net/1822/72421
Título: | Ultrasonic synthesis of Oct. trans-Br2Cu(N ∩ N)2) Jahn-Teller distortion complex: XRD-properties, solvatochromism, thermal, kinetic and DNA-binding evaluations |
Autor(es): | Warad, Ismail Musameh, Sharif Sawafta, Ashraf Brandao, Paula Tavares, C. J. Zarrouk, Abdelkader Arnereih, Sameer Al Ali, Anas Shariah, Rami |
Palavras-chave: | Cu(II) XRD Jahn-Teller Solvatochromism DNA TGA FWO isoconversional |
Data: | Abr-2019 |
Editora: | Elsevier |
Revista: | Ultrasonics Sonochemistry |
Citação: | Warad I, Musameh S, Sawafta A, et al. Ultrasonic synthesis of Oct. trans-Br2Cu(N ∩ N)2 Jahn-Teller distortion complex: XRD-properties, solvatochromism, thermal, kinetic and DNA-binding evaluations. Ultrasonics Sonochemistry. 2019 Apr; 52:428-436 |
Resumo(s): | Under mode of ultrasonic vibration, the neutral octahedral mononuclear [trans-CuBr2(N ∩ N)2]·3H2O complex with N ∩ N = 2,2-dimethylpropane-1,3-diamine was obtained. The structure of the desired complex was characterized by UV–Vis. spectroscopy, FT-IR, EDX, MS, SEM, TG/DTA and CHN-analysis. The octahedral-structure of the desired Cu(II) complex was proven via XRD single-crystal diffraction and its molecular interactions were computed by Hirschfeld surface analysis. Alcohol (as solvent) and short ultrasonic vibration dose period played a critical role in sonochemistry synthesis of octahedral neutral trans-CuBr2(N ∩ N)2 complex instead of trigonal bi-pyramidal monocation [CuBr(N ∩ N)2]Br one. Due to the Jahn-Teller effect, the complex exhibited a trans bonds elongation along Br-Cu-Br axis originating a distorted-octahedral Cu(II), as revealed by the XRD measurements (Br-Cu = 3.04 Å). Therefore, the Solvatochromic behavior of the complex was successfully performed since the trans di-bromide ions are loosely coordinated to Cu(II) center, the change in complex solutions colors by using different solvents which can be detected even by naked-eye supported atypical Jahn-Teller elongation effect formation. TG/DTA and Flynn Wall Ozawa (FWO) isoconversional kinetic methods were applied for the complex to figure out the thermal behavior, kinetic of the ligands de-structured and estimate its Ea/α relation. The complex binding mode to the CT-DNA was examined by UV–vis. spectroscopic, melting curve, CV and viscosity tests. The complex exhibited very strong DNA binding via an intercalation mode of coordination with Kb = 6.5 × 105 value |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/72421 |
DOI: | 10.1016/j.ultsonch.2018.12.019 |
ISSN: | 1350-4177 |
Versão da editora: | https://www.sciencedirect.com/science/article/pii/S1350417718317851 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | BUM - CIÊNCIAVITAE |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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2019-Ultrasonics_CTavares.pdf Acesso restrito! | 8 MB | Adobe PDF | Ver/Abrir |