22 research outputs found
Effect of glucocorticoids on expression of cutaneous antimicrobial peptides in northern leopard frogs (Lithobates pipiens)
Full text linkChemInform Abstract: Monoperoxidovanadium(V) Complexes: Synthesis, Structure and Solution Properties
No full textOxo/dioxo-vanadium(V) complexes with Schiff base ligands derived from 4-amino-5-mercapto-3-phenyl-1,2,4-triazole
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Oxo Peroxo Glycolato Complexesof Vanadium (V). Crystal Structureof (NBu4)2[V2O2(O2)2(C2H2O3)2]ċH2O
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Peroxido Complexes of Vanadium(V) as Ligands. Crystal Structures of [Cd(NH<sub>3</sub>)<sub>6</sub>][{VO(O<sub>2</sub>)<sub>2</sub>(OH)}<sub>2</sub>{μ-Cd(NH<sub>3</sub>)<sub>4</sub>}] and [{VO(O<sub>2</sub>)<sub>2</sub>(Im)}<sub>2</sub>{μ-Cu(Im)<sub>4</sub>}] (Im = Imidazole)
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novel heterometallic complexes [Cd(NH<sub>3</sub>)<sub>6</sub>][{VO(O<sub>2</sub>)<sub>2</sub>(OH)}<sub>2</sub>{μ-Cd(NH<sub>3</sub>)<sub>4</sub>}] (<b>2</b>) and [{VO(O<sub>2</sub>)<sub>2</sub>(Im)}<sub>2</sub>{μ-Cu(Im)<sub>4</sub>}] (<b>3</b>) (Im
= imidazole) containing peroxidovanadium complexes as metalloligands
were prepared and characterized by spectral methods. X-ray single-crystal
analysis revealed the presence of unique trinuclear complexes in the
crystal structures of <b>2</b> and <b>3</b>. The structure
of <b>2</b> contains an anionic complex, whose two {VO(O<sub>2</sub>)<sub>2</sub>(OH)}<sup>2–</sup> ions are interconnected
by a {μ-Cd(NH<sub>3</sub>)<sub>4</sub>}<sup>2+</sup> group.
Compound <b>3</b> is a trinuclear neutral complex comprising
two {VO(O<sub>2</sub>)<sub>2</sub>(Im)}<sup>−</sup> ions and
a single bridging {μ-Cu(Im)<sub>4</sub>}<sup>2+</sup> group.
The bonding via an equatorial OH<sup>–</sup> ligand in <b>2</b> and via a doubly bonded apical oxygen atom in <b>3</b> represents coordination modes previously unobserved for diperoxidovanadium
complexes. Compared with complex <b>2</b>, density functional
theory studies reported decreased Cu−μ-O bond orders
and increased μ-O–V bond orders in <b>3</b>, in
accordance with the expected Jahn–Teller distortion of the
latter complex
Experimental Study and Modeling of the UVVis and Infrared Spectra of the [VO(O2)Hheida] Complex Dissolved in Water
No full textDinuclear vanadium complexes with rigid phenylpolycarboxylate ligands: synthesis, structure, and catalytic bromination reaction with potential detection of hydrogen peroxide
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