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A common vanadium phosphate is VOPO 4 •2H 2 O. Seven polymorphs are known for anhydrous VOPO 4 , denoted α I , α II , β, γ, δ, ω, and ε. [ a ] [ 1 ] [ 2 ] [ 3 ] These materials are composed of the vanadyl group (VO) and phosphate (PO 4 3− ).
An example is vanadyl acetylacetonate (V(O)(O 2 C 5 H 7) 2). In this complex, the vanadium is 5-coordinate, distorted square pyramidal, meaning that a sixth ligand, such as pyridine, may be attached, though the association constant of this process is small. Many 5-coordinate vanadyl complexes have a trigonal bipyramidal geometry, such as VOCl 2 ...
An example is vanadyl acetylacetonate (V(O)(O 2 C 5 H 7) 2). In this complex, the vanadium is 5-coordinate, distorted square pyramidal, meaning that a sixth ligand, such as pyridine, may be attached, though the association constant of this process is small. Many 5-coordinate vanadyl complexes have a trigonal bipyramidal geometry, such as VOCl 2 ...
Acting as a transition-state analog of phosphate, vanadate undergoes nucleophillic attack by water during phosphoryl transfer, essentially "trapping" P-type ATPases in their phosphorylated E2 state. [ 11 ] [ 12 ] It also inhibits skeletal muscle actomyosin MgATPase activity [ 13 ] and calcium activated force generation by actomyosin in the ...
Vanadium phosphates have been investigated as potential cathodes for Li-ion batteries: including lithium vanadium phosphate, Li 3 V 2 (PO 4) 3; [1] [2] the same material prepared by sol gel methods showed lithium insertion/removal over a 3.5 to 4.1 V range, with evidence of three stages of insertion/removal.
Structure of vanadyl acetylacetonate Cavansite, a mineral containing the vanadyl cation that illustrates its characteristic color. The vanadyl or oxovanadium(IV) cation, VO 2+, [1] is a functional group that is common in the coordination chemistry of vanadium. Complexes containing this functional group are characteristically blue and paramagnetic.
Vanadates exhibit a variety of biological activities, in part because they serve as structural mimics of phosphates. [6] [7] It acts as a competitive inhibitor of ATPases, alkaline and acid phosphatases, and protein-phosphotyrosine phosphatases, [8] and its inhibitory effects can be reversed by dilution or the addition of ethylenediaminetetraacetic acid (EDTA).
Vanadyl(IV) sulfate describes a collection of inorganic compounds of vanadium with the formula, VOSO 4 (H 2 O) x where 0 ≤ x ≤ 6. The pentahydrate is common. The pentahydrate is common. This hygroscopic blue solid is one of the most common sources of vanadium in the laboratory, reflecting its high stability.
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