Synthesis, structure and solution chemistry of a family of dinuclear hydrazonato-vanadium(V) complexes with [OV(μ-O)VO]4+ core

Mondal, Bipul; Ghosh, Tarun; Sutradhar, Manas; Mukherjee, G. N.; Drew, Michael G. B.; Ghosh, Tapas

doi:10.1016/j.poly.2008.03.018

Cited by 33 publications

(14 citation statements)

References 43 publications

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“…These oxidovanadium(V) complexes exhibited quasi-reversible one electron reduction peak near −0.10 V vs SCE due to VO 3+ → VO 2+ couple (Table 5, With the same ligands, dinuclear -O VO 3+ complexes were prepared [169], that exhibited a quasi-reversible reduction peak (Table 6, entries 15-18), suggesting an identical electronic environment at both the vanadium centers. A Hammett correlation between potentials and was found, very similar to that reported for mononuclear species E pc (V) = 0.20 + 0.19 (r = 0.98).…”

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

confidence: 99%

A journey into the electrochemistry of vanadium compounds

Galloni

Conte

2015

Coordination Chemistry Reviews

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

confidence: 99%

A journey into the electrochemistry of vanadium compounds

Galloni

Conte

2015

Coordination Chemistry Reviews

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“…On the other hand, aroylhydrazones are known to form stable complexes with vanadium in +4 or +5 oxidation states [44][45][46][47][48]. Therefore, the main objective of the present study was to establish the viability of oxidovanadium complexes based on an aroylhydrazone ligand as possible catalyst precursors for alcohols oxidation under the above conditions (in the absence of added solvent and under MW irradiation).…”

Section: Introductionmentioning

confidence: 98%

Oxidovanadium complexes with tridentate aroylhydrazone as catalyst precursors for solvent-free microwave-assisted oxidation of alcohols

Sutradhar

Martins

Silva

et al. 2015

Applied Catalysis A: General

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“…Mononuclear and binuclear vanadium complexes containing acylhydrazone ligands posses various structures and biological activity. The synthesis, characterization and biological activity of these complexes are of growing interest [1][2][3][4][5]. The title complex is amononuclear oxovanadium(V) species.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of methoxy(2-methoxysalicylalde-2-furylhydrazonato) oxovanadium(V), VO(C13H10N2O4)(OCH3)

Zhou¹,

Xing²,

Xiao³

et al. 2009

Zeitschrift Für Kristallographie - New Crystal Structures

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C 14 H 13 N 2 O 6 V, triclinic, P1 (no. 2), a =7.5823(2) Å, b =9.9523(3) Å, c =10.0978(3) Å, a =96.479(2)°, b =102.545(2)°, g =95.128(2)°, V =733.9 Å 3 , Z =2, R gt(F) =0.043, wRref(F 2 ) =0.108, T =296 K. Source of materialThe ligand 3-methoxysalicylalde-2-furoic acid hydrazone (H 2L) was prepared by condensing 3-methoxysalicylalde with 2-furoic hydrazide in ethanol. VO(acac) 2 (0.133 g, 0.5 mmol) was added to the solution of H 2L(0.130 g, 0.5 mmol) dissolved in 5mlmeth-anol and 5mlacetonitrile under continuous stirring. The reaction mixture was stirred for 48 h. The resulting brown solution was filtered off and allowed to evaporate slowly at room temperature. After 8-10days, brown plate crystals suitable for X-ray diffraction analysis were separated. DiscussionThe coordination chemistry of vanadium has received considerable attention due to their applicability in chemistry, biology and medicine. Mononuclear and binuclear vanadium complexes containing acylhydrazone ligands posses various structures and biological activity. The synthesis, characterization and biological activity of these complexes are of growing interest [1][2][3][4][5]. The title complex is amononuclear oxovanadium(V) species. In the crystal structure the hydrazone H 2 Lf unctions as tridentate ligand in the enolate form bonded to the VO 3+ core. The coordination environment of the vanadium atom approximates as quare pyramid. The basal plane is composed of the phenolate O3, the enolate O2 oxygen atom, the imine nitrogen N1 atom and the O1 oxygen atom from am ethoxide ion, with the mean devitation from the plane of 0.027 Å.The vanadyl oxygen atom O4 is in the apical position and it deviates from the basal plane by about 0.364.Å.C helation gives rise to one five-membered (V1−N1− N2−C9−O2) and one six-membered (V1−O3−C2−C1−C7−N1) rings. Both of the rings are slightly folded. The ligand system is practically planar with mean deviation from plane of 0.057 Å,and its angle with the coordination basal plane is 6.2°.The terminal oxo group shows the short bond distance (1.576 Å)being characteristic for V=O double bond [6] and in agreement with the vanadyl group in other vanadium (V) complexes [7,8]. The bond distances V1-O1 (1.808 Å), V1-O2 (1.935 Å)a nd V1-O3 (1.819 Å)are in the range reported in the literature [9]. The bond length of V1-N1 (2.106 Å)issimilar to that in other analogues. N2-C9 (1.305 Å)and C9-O2 (1.307 Å)distances confirm the enolate mode of coordination. There are no obvious hydrogen bond interaction and p-p packing effects observed.

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Synthesis, structure and solution chemistry of a family of dinuclear hydrazonato-vanadium(V) complexes with [OV(μ-O)VO]4+ core

Cited by 33 publications

References 43 publications

A journey into the electrochemistry of vanadium compounds

A journey into the electrochemistry of vanadium compounds

Oxidovanadium complexes with tridentate aroylhydrazone as catalyst precursors for solvent-free microwave-assisted oxidation of alcohols

Crystal structure of methoxy(2-methoxysalicylalde-2-furylhydrazonato) oxovanadium(V), VO(C13H10N2O4)(OCH3)

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