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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 the +5 oxidation state. [ 1 ]
Complexes of vanadium(II) and (III) are reducing, while those of V(IV) and V(V) are oxidants. The vanadium ion is rather large and some complexes achieve coordination numbers greater than 6, as is the case in [V(CN) 7] 4−. Oxovanadium(V) also forms 7 coordinate coordination complexes with tetradentate ligands and peroxides and these complexes ...
Vanadium(III) oxide is the inorganic compound with the formula V 2 O 3. It is a black solid prepared by reduction of V 2 O 5 with hydrogen or carbon monoxide. [3] [4] It is a basic oxide dissolving in acids to give solutions of vanadium (III) complexes. [4] V 2 O 3 has the corundum structure. [4]
A selenide is a chemical compound containing a selenium with oxidation number of −2. Similar to sulfide , selenides occur both as inorganic compounds and as organic derivatives, which are called organoselenium compound .
The vanadium oxides can also be used to produce vanadium(III) chloride. For example, vanadium(III) oxide reacts with thionyl chloride at 200 °C: [15] V 2 O 3 + 3 SOCl 2 → 2 VCl 3 + 3 SO 2. The reaction of vanadium(V) oxide and disulfur dichloride also produces vanadium(III) chloride with the release of sulfur dioxide and sulfur. [15]
The complexes [V(CN) 6] 3− and [V 2 Cl 9] 3− are referred to as hexacyanovanadate(III) and nonachlorodivanadate(III), respectively. A simple vanadate ion is the tetrahedral orthovanadate anion, VO 3− 4 (which is also called vanadate(V)), which is present in e.g. sodium orthovanadate and in solutions of V 2 O 5 in strong base ( pH > 13 [ 1
Vanadium oxytrichloride – VOCl 3; Vanadium(II) chloride – VCl 2; Vanadium ... Indium(III) selenide – In 2 Se 3; Indium(III) sulfide – In 2 S 3 ...
bismuth(III) iodide: 7787-64-6 Bi(NO 3) 3 ·5H 2 O: bismuth(III) nitrate pentahydrate: 10035-06-0 BiOCl: bismuth(III) oxychloride: 7787-59-9 BiOI: bismuth(III) oxyiodide: 7787-63-5 (BiO) 2 CO 3: bismuth oxycarbonate: 5892-10-4 BiPO 4: bismuth(III) orthophosphate: 10049-01-1 Bi(VO 3) 5: bismuth(III) metavanadate: Bi 2 Se 3: bismuth(III) selenide ...