Structural study of 2-pyridine-derived<i>N</i>(4)-<i>p</i>-tolyl thiosemicarbazone zinc(II) complexes–DFT analysis

Puchta, Ralph; Shaban, Shaban Y.; Mansour, Hanaa; Alzoubi, Basam M.

doi:10.1080/00958972.2010.492428

Cited by 2 publications

(1 citation statement)

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“…Pyridine-based thiosemicarbazones usually bind with Zn(II) or Fe(II) through tridendate coordination. In this work, phenylthiosemicarbazone facilitated bidendate coordination selectively with Cu(II). − This unique sensing behavior can be observed directly in the photograph (Figure d).…”

Section: Results and Discussionmentioning

confidence: 62%

Water-Soluble Polymeric Probe for the Selective Sensing and Separation of Cu(II) Ions in Aqueous Media: pH-Tunable Detection Sensitivity and Efficient Separation by Thermal Precipitation

Bak

Lee

2017

Macromolecules

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A thiosemicarbazone-based water-soluble polymeric probe was developed for the selective colorimetric detection of Cu(II) ions with pH-tunable sensitivity. The successful separation of Cu(II) ions from several alkali and transition metal cations by thermal precipitation was demonstrated. N , N -Dimethylacrylamide (DMA) and 3-vinylbenzaldehyde (VBA) were copolymerized by reversible addition–fragmentation chain transfer (RAFT) polymerization to produce p(DMA-co-VBA), herein P1. The aldehyde group of P1 was reacted with 4-phenylthiosemicarbazide to yield poly{DMA-co-[N-phenyl-2-(3-vinylbenzylidene)hydrazinecarbothioamide]}, [p(DMA-co-PVHC)], herein P2. Upon the addition of Cu(II) ions to an aqueous solution of P2, the color of the solution turned from colorless to yellow due to the formation of a coordination complex between the Cu(II) ions and phenylthiosemicarbazone units of P2, herein P2–Cu(II). The availability of the electron-rich imino nitrogen in the thiosemicarbazone units allowed P2 to show excellent sensing behavior toward Cu(II) ions. P2 has remarkable pH-switchable sensing properties toward Cu(II) ions. Although efficient colorimetric sensing was observed at neutral or high pH, no appreciable color change appeared at low pH. Protonation of the imino nitrogen at low pH prevented the formation of coordination complexes. Cu(II) ions were separated successfully from various alkali and transition metal cations by thermal precipitation due to the thermoresponsive property of P2–Cu(II).

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Section: Results and Discussionmentioning

confidence: 62%

Water-Soluble Polymeric Probe for the Selective Sensing and Separation of Cu(II) Ions in Aqueous Media: pH-Tunable Detection Sensitivity and Efficient Separation by Thermal Precipitation

Bak

Lee

2017

Macromolecules

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[Be₃(μ₃‐O)₃(MeCN)₆{Be(MeCN)₃}₃](I)₆ – ein Berylliumkomplex mit Cyclo‐(Be₃O₃)‐Kern und sein Hydrolyseprodukt [Be(H₂O)₄](I)₂·2MeCN

Puchta

Neumüller

Dehnicke

2010

Zeitschrift anorg allge chemie

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Single crystals of [Be 3 (μ 3 -O) 3 (MeCN) 6 {Be(MeCN) 3 } 3 ](I) 6 · 4CH 3 CN (1·4CH 3 CN) were obtained in low yield by the reaction of beryllium powder with iodine in acetonitrile suspension, which probably result from traces of beryllium oxide containing the applied beryllium metal. The compound 1·4CH 3 CN forms moisture sensitive, colourless crystal needles, which were characterized by IR spectroscopy and X-ray diffraction (Space group Pnma, Z = 4, lattice dimensions at 100(2) K: a = 2317.4(1), b = 2491.4(1), c = 1190.6(1) pm, R 1 = 0.0315). The hexaiodide complex cation 1 6+ consists of a cyclo-Be 3 O 3 core with slightly distorted chair conformation, stabilized by coordination of two acetonitrile ligands at each of the beryllium atoms and by a {Be(CH 3 CN) 3 } 2+ cation at each of the oxygen atoms. This unique coordination behaviour results in coplanar OBe 3 units with short Be-1 Einleitung Berylliumpulver und Iod reagieren mit einer Reihe überschüssiger Lewis-basischer Ligandmoleküle L bereits bei Raumtemperatur in langsamer, exothermer Reaktion unter Bildung der entsprechenden solvatisierten Dikationen [Be(L) 4 ] 2+ mit Iodid oder Polyiodiden als Gegenionen, wobei die Ligandmoleküle als Reaktanden und Lösungsmittel zugleich fungieren. Wir haben diesen neuen präparativen Reaktionstyp anhand der stark basischen Solvatreagentien L = Pyridin, [1] Tetramethylharnstoff, [2] Diisopropylcyanamid [3] und N-Methylimidazol [4] geprüft und die * Dr. R. Puchta

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Structural study of 2-pyridine-derivedN(4)-p-tolyl thiosemicarbazone zinc(II) complexes–DFT analysis

Cited by 2 publications

References 62 publications

Water-Soluble Polymeric Probe for the Selective Sensing and Separation of Cu(II) Ions in Aqueous Media: pH-Tunable Detection Sensitivity and Efficient Separation by Thermal Precipitation

Water-Soluble Polymeric Probe for the Selective Sensing and Separation of Cu(II) Ions in Aqueous Media: pH-Tunable Detection Sensitivity and Efficient Separation by Thermal Precipitation

[Be₃(μ₃‐O)₃(MeCN)₆{Be(MeCN)₃}₃](I)₆ – ein Berylliumkomplex mit Cyclo‐(Be₃O₃)‐Kern und sein Hydrolyseprodukt [Be(H₂O)₄](I)₂·2MeCN

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Structural study of 2-pyridine-derivedN(4)-p-tolyl thiosemicarbazone zinc(II) complexes–DFT analysis

Cited by 2 publications

References 62 publications

Water-Soluble Polymeric Probe for the Selective Sensing and Separation of Cu(II) Ions in Aqueous Media: pH-Tunable Detection Sensitivity and Efficient Separation by Thermal Precipitation

Water-Soluble Polymeric Probe for the Selective Sensing and Separation of Cu(II) Ions in Aqueous Media: pH-Tunable Detection Sensitivity and Efficient Separation by Thermal Precipitation

[Be3(μ3‐O)3(MeCN)6{Be(MeCN)3}3](I)6 – ein Berylliumkomplex mit Cyclo‐(Be3O3)‐Kern und sein Hydrolyseprodukt [Be(H2O)4](I)2·2MeCN

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[Be₃(μ₃‐O)₃(MeCN)₆{Be(MeCN)₃}₃](I)₆ – ein Berylliumkomplex mit Cyclo‐(Be₃O₃)‐Kern und sein Hydrolyseprodukt [Be(H₂O)₄](I)₂·2MeCN