Search results
Results from the WOW.Com Content Network
Heating a suspension of vanadium pentoxide and phosphoric acid gives VOPO 4 •2H 2 O, isolated as a bright yellow solid. [4] According to X-ray crystallography, the V(V) centers are octahedral, with long, weak bonds to aquo ligands. [5] Reduction of this compound with alcohols gives the vanadium(IV) phosphates.
From left: [V(H 2 O) 6] 2+ (lilac), [V(H 2 O) 6] 3+ (green), [VO(H 2 O) 5] 2+ (blue) and [VO(H 2 O) 5] 3+ (yellow).. Vanadium compounds are compounds formed by the element vanadium (V). The chemistry of vanadium is noteworthy for the accessibility of the four adjacent oxidation states 2–5, whereas the chemistry of the other group 5 elements, niobium and tantalum, are somewhat more limited to ...
23 V vanadium; use: 5.5 g/cm 3: CR2 ... formula weight = 222 Notes ... V m (L) d (g/L) d (g/L) Argon: 1.363: 0.03219: 24.77: 1.613: 22.39: 1.784: 1.7837
Vanadium forms oxides in the +2, +3, +4 and +5 oxidation states, forming vanadium(II) oxide (VO), vanadium(III) oxide (V 2 O 3), vanadium(IV) oxide (VO 2) and vanadium(V) oxide (V 2 O 5). Vanadium(V) oxide or vanadium pentoxide is the most common, being precursor to most alloys and compounds of vanadium, and is also a widely used industrial ...
Vanadium(V) compounds (1 C, 13 P) Vanadyl compounds (12 P) Pages in category "Vanadium compounds" The following 9 pages are in this category, out of 9 total.
The phosphorus and oxygen are not bound together as in phosphates or phosphine oxides, instead they are bound separately to the cations (metals), and could be considered as a mixed phosphide-oxide compound. So a compound with O m P n requires cations to balance a negative charge of 2m+3n. The cations will have charges of +2 or +3.
formula name crystal system space group unit cell Å form MW density properties references Li 2 SiP 2: tetragonal: I4 1 /acd: a=12.111 Å, c=18.658 Å, Z=32 V=2732.6
It is the predominant vanadium(V) species in acidic solutions with pH between 0 and 2, and its salts are formed by protonation of vanadium(V) oxide in such solutions: [2] [3] V 2 O 5 + 2 H + → 2 VO + 2 + H 2 O (K = 3.42 × 10 −2) The ion can form a complex with a single aminopolycarboxylate ligand, [4] or with tridentate Schiff base ligands ...