Chemical Structure / July 20, 2018 / Jana Berger
Pyridine is a colorless liquid. It boils at 115 degrees Celsius (239 F) and freezes at -42 degrees Celsius (-43.6 F). Its density is very close to that of water, at 0.982 gcm3 (water's density is 1). It is able to mix easily with water and most other organic solvents.
The carbothermic reaction is analogous to the Kroll process for the conversion of titanium dioxide to titanium tetrachloride. In the laboratory BF3 reacted with AlCl3 gives BCl3 via halogen exchange. BCl3 is a trigonal planar molecule like the other boron trihalides, and has a bond length of 175pm.
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