titanium

Examples of titanium in the following topics:

• Titanium, Chromium, and Manganese

  • Titanium is a strong, lustrous transition metal.
  • Titanium was discovered in Cornwall, Great Britain, in 1791, by William Gregor.
  • In its unalloyed condition, titanium is as strong as some steels, but 45% lighter.
  • Titanium is one of the least dense, strong, and corrosion-resistant elements.
  • Titanium is commonly used in airplanes, golf clubs, and other objects that must be strong but lightweight.

• Ziegler-Natta Catalytic Polymerization

  • The catalyst formed by reaction of triethylaluminum with titanium tetrachloride has been widely studied, but other metals (e.g.
  • Polymerization of propylene through action of the titanium catalyst gives an isotactic product; whereas, a vanadium based catalyst gives a syndiotactic product.

• Molar Mass of Compounds

  • For example, the atomic mass of titanium is 47.88 amu or 47.88 g/mol.
  • In 47.88 grams of titanium, there is one mole, or 6.022 x 1023 titanium atoms.

• Epoxidation

  • Sharpless, Scripps Research Institute, has transformed this general epoxidation reaction into a powerful enantioselective procedure, by the addition of a chiral tartrate ester ligand to a titanium alkoxide catalyst.
  • When mixed with one equivalent of diethyl tartrate, titanium tetraisopropoxide forms a dimeric complex with the loss of two isopropyl alcohol molecules.
  • A proposed structure for this complex is shown in the first diagram below, with the titanium atoms colored green.

• Occurrence of Metals

  • Metals that can be found as native deposits singly and/or in alloys include antimony, arsenic, bismuth, cadmium, chromium, cobalt, indium, iron, nickel, selenium, tantalum, tellurium, tin, titanium, and zinc.
  • Other significant metallic alloys are those of aluminium, titanium, copper, and magnesium.
  • The alloys of aluminium, titanium, and magnesium are valued for their high strength-to-weight ratios, and magnesium can also provide electromagnetic shielding.

• 1:3-Diastereoselection in Reactions with Chiral Aldehydes

  • As expected, the E-borinates give α:β-anti diastereomers exclusively, and the Z-titanium enolates strongly favor the α:β-syn family of isomers.
  • Other combinations show diminished β:γ-syn selectivity, and in the case of the Z-titanium enolates anti-Felkin-Ahn selectivity narrowly predominates.

• Carbides

• Trihalides: Boron-Halogen Compounds

  • The synthesis is analogous to the Kroll process for the conversion of titanium dioxide to titanium tetrachloride.

• Functionalized Organometallic Reagents

  • The resulting dialkylzinc reagent tolerates some functional substituents (e.g. esters and nitriles), and undergoes carbonyl addition reactions with aldehydes and ketones provided a titanium(IV) catalyst is present.

• General Properties of Metals

  • As a result, they retain their shiny appearance and good conductivity for many decades (like aluminium, magnesium, some steels, and titanium).