Ligand controlled synthesis of mixed-ligand oxovanadium(V) and oxovanadium(IV) complexes

Ghosh, Tapas; Bhattacharya, Sharmila; Bandyopadhyay, Chandrakanta; Mukherjee, G. N.

doi:10.3184/0308234041639773

Cited by 6 publications

(9 citation statements)

References 24 publications

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“…Other much weaker absorption bands at 2819 and 2920 cm −1 due to asymmetric and symmetric vibration modes of methyl and methylene groups are also detected. Our results are compatible with the reported results of Ghosh et al and Maurya et al …”

Section: Resultssupporting

confidence: 94%

Synthesis of polyamidoamine dendrimer (PAMAM/CuS/AA) nanocomposite and its application in the removal of Isma acid fast yellow G Dye

Taleb

El-Trass

El-Sigeny

2015

Polym. Adv. Technol.

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The adsorption of Isma acid fast yellow G dye was studied using polyamidoamine (PAMAM)/Copper sulfide (CuS)/AA nanocomposite containing different amounts of CuS by batch technique. PAMAM dendrimer/CuS/AA nanocomposites were synthesized via gamma irradiation cross‐linking method with the aid of sonication. The nanocomposites were characterized by Fourier‐transform infrared, X‐ray diffraction, transmission electron microscope, energy dispersive spectroscopy X‐ray, thermal gravimetric analysis, ultraviolet‐visible, and fluorescence spectroscopy. The size of the CuS nanoparticles was formed in the range of 12–19 nm. The adsorption capacity of the nanocomposites was evaluated as a function of initial dye concentration, pH, adsorbent dosage, and time. It was verified that the adsorption rate fits a pseudo‐second‐order kinetics for initial Isma acid fast yellow G dye concentrations. Results indicated that the adsorption of Isma acid fast yellow G dye fitted well to the Langmuir model. Our results demonstrate that the PAMAM dendrimer/CuS/AA nanocomposite is very promising for removing organic dyes from wastewater. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Resultssupporting

confidence: 94%

Synthesis of polyamidoamine dendrimer (PAMAM/CuS/AA) nanocomposite and its application in the removal of Isma acid fast yellow G Dye

Taleb

El-Trass

El-Sigeny

2015

Polym. Adv. Technol.

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“…the enol form of 2,4-pentanedione N-benzoylhydrazone, and bidentate N-N ligands, bipy and phen [56]. They exhibited an one-electron irreversible oxidation peak in MeCN solution (Table 1, entries 44,45).…”

Section: Complexes With Tridentate Ligandsmentioning

confidence: 99%

“…The complexes uniformly exhibited a quasi-reversible cyclic voltammetric response in DCM solution (Table 1, entries [50][51][52][53][54][55][56][57].…”

Section: Complexes With Tridentate Ligandsmentioning

confidence: 99%

“…Mixed-ligand oxidoV(V) complexes were prepared with the already discussed enol form of 2,4-pentanedione Nbenzoylhydrazone [56], and bidentate O-O monoanionic ligands from 1,2-ethanediol (EGH 2 ), salicylaldehyde (salH) and vanillin (vanH). They exhibited either irreversible reduction (with EGH ligand in DMSO) or a quasi-reversible cyclic voltametric response (Table 5, entries [40][41][42].…”

Section: Oxido-and Dioxido-vanadium(v) Speciesmentioning

confidence: 99%

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A journey into the electrochemistry of vanadium compounds

Galloni

Conte

2015

Coordination Chemistry Reviews

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“…156 VO(L)(HL) has nVQO at 957 cm À1 , where H 2 L = (4). [167][168][169][170][171][172][173][174][175][176] Skeletal mode assignments have been proposed for [(VO 2 )(dipic)] 2 2À , where H 2 dipic = (8), from IR and Raman spectra, including n s VO 2 862, 849 cm À1 , n as VO 2 965 cm À1 , nVO (carboxylate) 456 cm À1 , nV-N 367 cm À1 . 158 The IR spectrum of [(VO) 12 42 ] 6À has nVQO at 945 cm À1 , n s V-O-V 785 cm À1 , and n as V-O-V 687 cm À1 .…”

Section: Titanium Zirconium and Hafniummentioning

confidence: 99%

Vibrational spectra of transition element compounds

Davidson¹

Spectroscopic Properties of Inorganic and Organometallic Compounds

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Scandium, yttrium and the lanthanidesLaser-ablated scandium atoms react with H 2 O/N 2 mixtures to give matrix-trapped (Z 1 -N 2 )Sc(H)OH, (Z 1 -N 2 ) 2 Sc(H)OH and (Z 2 -N 2 )Sc(H)OH. nScH assignments, based on isotopic shifts and DFT calculations, are listed in Table 1. 1 The FTIR spectrum of Sc 3 N@C 80 gave assignments for two isomers-both with trigonal planar Sc 3 N units. 2 There is IR evidence that ScO + in noble gas matrices forms adducts [ScO(Ng) 5Àn (Ng 0 ) n ] + , where n = 0-5, Ng, Ng 0 = Ar, Kr, Xe. nScO assignments are given in Table 2. 3 Laser-evaporated ScO and N 2 , or Sc atoms and N 2 O form the matrix-trapped species OSc(Z 2 -N 2 ). This rearranges to an Z 1 -form (OScNN) on UV irradiation. nScO for the former is at 906.5 cm À1 , and for the latter at 894.6 cm À1 . 4 The Raman spectrum of [Sc(OSMe 2 ) 6 ] 3+ includes symmetric (a g ) and degenerate (e g ) nScO modes at 429, 451 cm À1 , respectively. The IR spectrum includes bands at 452 and 463 cm À1 due to e u , a u modes, respectively. 5 Ab initio calculations gave skeletal vibrational wavenumbers for Sc(mda) 3 ,where mda = C 3 H 3 O 2 À . 6 Raman studies have revealed grain-size effects for nanocrystalline ZrO 2 -Sc 2 O 3 , i.e. (ZrO 2 ) 1Àx (Sc 2 O 3 ) x , where x = 0.02-0.16. 7 The IR and Raman spectra of M 2 (M 0 O 4 ) 3 , where M = Sc, In, M 0 = Mo, W, gave characteristic assignments. For Sc 2 (MoO 4 ) 3 , variable-temperature spectra show the effects of the ferroelastic phase transition. 8 There have been two other reports of Raman studies of the phase behaviour of Sc 2 (MoO 4 ) 3 . 9,10 Raman spectroscopy was used to characterise intermediate compositions in the systems Ln 2 S 3 -Ln 0 2 S 3 , where Ln = La, Dy, L 0 = Sc, Lu etc. 11 The variable-temperature Raman spectra of Rb 2 KScF 6 (elpasolite) were used to follow temperature-induced phase transitions (using both ScF 6 and lattice modes). 12 The IR spectra of MCl 2 (k 3 -L)(thf), where M = Sc, Y, HL = (1), R = COOH, CSSH and CH 2 OH, include nMS near 300 cm À1 , and nMO (R = CH 2 OH) 570 cm À1 . 13 Characteristic Raman bands were seen at 204 and 42 cm À1 for a superconducting YNi 2 B 2 C single crystal. 14 The IR spectrum of Y 2 O 3 shows that nY-O shifts to lower wavenumber with decreased particle size. 15 Variable-temperature Raman spectroscopy was used to follow phase transitions of Y 2 O 3 -ZrO 2 . 16 IR and Raman spectra gave vibrational wavenumbers for orthorhombic M 2 BaCuO 5 , where M = Y, Ho or Gd, assigned using a short-range force constant model. 17 The Raman spectra of Ln 3 NbO 7 , where Ln = Y, La, Nd, Gd, in the temperature range 298-973K gave evidence for reversible structural disordering on increasing temperature. 18 IR data, together with previous Raman bands, gave assignments for KY 3 F 10 single crystals, supported by a normal coordinate analysis. 19 The IR and Raman spectra of [Ln(OH 2 ) 9 ] 3+ , where Ln = La, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu, gave detailed assignments for the LnO 9 unit (D 3h ). 20 Structural characteristics of MFeGe 2 O 7 , where M...

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Ligand controlled synthesis of mixed-ligand oxovanadium(V) and oxovanadium(IV) complexes

Cited by 6 publications

References 24 publications

Synthesis of polyamidoamine dendrimer (PAMAM/CuS/AA) nanocomposite and its application in the removal of Isma acid fast yellow G Dye

Synthesis of polyamidoamine dendrimer (PAMAM/CuS/AA) nanocomposite and its application in the removal of Isma acid fast yellow G Dye

A journey into the electrochemistry of vanadium compounds

Vibrational spectra of transition element compounds

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