synonymVanadium trichloride oxide(Vanadium oxychloride) generally refers to vanadium oxychloride
Vanadium oxychloride, ainorganic compound, chemical formula is VOClthree, mainly used as solvent, catalyst for olefin polymerization, and also for organicvanadiumSynthesis of compounds.It is a yellow liquid at room temperature.
The molecular configuration is tetrahedron, in which the bond angle of O-V-Cl bond is 111 °, the bond angle of Cl-V-Cl bond is 108 °, and the bond lengths of V-O bond and V-Cl bond are 157 pm and 214 pm respectively.See the picture "Vanadium oxychloride ball stick model" for its structure diagram.
Vanadium oxychloride will rapidly hydrolyze intoVanadium pentoxideAnd hydrochloric acid:
2VOClthree+ 3HtwoO → VtwoOfive+ 6HCl
Exchange to other V-O-Cl compounds
VOClthreeIt can also be used to synthesize VOCltwo：
VtwoOfive+ 3VClthree+ VOClthree→ 6VOCltwo
Vanadium monochloride can be composed of vanadium trichloride and CltwoReaction preparation of O:
VOClthree+ CltwoO → VOtwoCl + 2Cltwo
VO above 180 ° CtwoCl decomposes into VtwoOfiveAnd VOClthree。Similarly, VOCltwoIt can also be decomposed into VOClthreeAnd VOCl.
Adduct
VOClthreeIt is a strong Lewis acid and tends to form adducts with various bases such as acetonitrile and amine.In the formed adduct, vanadium will change from the original VfourGeometric tetrahedron becomes VsixOctahedron:
VOClthree+ 2 HtwoNEt → VOClthree(HtwoNEt)two
VOClthreeFor olefin polymerization
VOCl3 can be used as catalyst or pre catalyst in the reaction of preparing ethylene propylene rubber (real ethylene propylene diene monomer, EPDM).
Preparation method
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With vanadium pentoxide and activated carbon as raw materials, chlorine gas is introducedChlorination reactionVanadium oxychloride can be prepared.The reaction pipe used is 25mm in inner diameter and 700mm in lengththreeIt is liquid, so the outlet of the reaction tube should be bent downward, connected to the water-cooled condenser and installed with a grinded branch flask as the receiver of VOCl3.[2]
Calculate chemical data
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Reference value for drainage parameter calculation (XlogP): None
Number of hydrogen bond donors: 3
Number of hydrogen bond receptors: 1
Number of rotatable chemical bonds: 0
Number of tautomers: 0
Topological molecular polar surface area: 17.1
Number of heavy atoms: 5
Surface charge: 0
Complexity: 6.9
Number of isotope atoms: 0
Determine the number of atomic structure centers: 0
Number of uncertain atomic structure centers: 0
Determine the number of chemical bond structure centers: 0
Number of uncertain chemical bond structure centers: 0
Number of covalent bond units: 4[1]
toxicology data
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Acute toxicity: LDfifty: 140mg/kg (rat oral).[1]
purpose
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It is mainly used as solvent, catalyst for olefin polymerization and synthesis of vanadium organic compounds.
security information
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Safety terminology
S26：In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
After eye contact, immediately flush with plenty of water and seek medical advice.
S27：Take off immediately all contaminated clothing.
Take off all contaminated clothes immediately.
S28：After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer).
After skin contact, immediately use a large amount of(designated by the manufacturer).
S36/37/39：Wear suitable protective clothing, gloves and eye/face protection.
Wear appropriate protective clothing, gloves and eye/face protection.
S45：In case of accident or if you feel unwell, seek medical advice immediately (show the lable where possible).
In case of an accident or feeling unwell, seek medical advice immediately (show the label if possible).
