A fluoroalkane derivative according to claim 1, wherein the symbols in the formula (I) are respectively as follows; R: C.sub.8 H.sub.17 --, R.sup.1 : C.sub.7 H.sub.15 --, l: 1, ##STR120## m:1, ##STR121## n: 0, p: 1, q: 1 and r: 0.
The fluoroalkane derivative represented by the formula (I) may also be mixed with a smectic liquid crystal such as those of the formula (1)-(5) below which per se are not chiral to provide a composition which may be used as a ferroelectric liquid crystal.
In this case, the fluoroalkane derivative represented by the formula (I) may preferably be used in an amount of 0.1-99 wt.
A haloalkane, also known as alkyl halogenide, halogenalkane, or halogenoalkane, and alkyl halide is a chemical compound derived from an alkane by substituting one or more hydrogen atoms with halogen atoms.
Substitution with fluorine, chlorine, bromine and iodine results in fluoroalkanes, chloroalkanes, bromoalkanes and iodoalkanes, respectively.
In the 1960s, fluoroalkanes and bromofluoroalkanes became available, and were quickly recognised as one of the most effective fire fighting materials discovered.
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