7/24/2019 Tata Nama Freon-3

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F LUOROCARBON

ROpE

L LANTS-CURR

ENT AN

D

A

LTERN/\rt

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Derivationof the Fonnula

or

Fluorocarbons

14 and

I l4a

t\

l.

The first

digit on the right

is 4. Therefore,

he compound

contains

bur

fluorine

F)

atoms

Rule

l).

The second digit

from

the right is

l. Therefore,

there are no hydrogen

atoms

n the compound

Rule

2).

The third

digit from the right is l.

Therefore, the

compound

contains

two

carbon atoms

Rule

3).

Since the compoundcontains wo

carbon

atoms,

here are

six other

atoms

attached

o the carbon atoms.

Since here are four

fluorine

atomsand

no

hydrogen atoms,

the compound contains

two chlorine

atoms

Rule

4).

The empirical formula for

fluorocarbon

ll4 is, therefore,

CrCl2Fa.

The

most

symmetrical,CCIF2CCIF2,

s designated

luorocarbon

114

and has

the

followins

structure:

Fluorocarbon 14

The

unsymmetrical orm,

CCI2FCF3,s designatedluorocarbon

14a and

has he following structure:

_ F

Fluorocarbon

l4a

nuln

6.

For

cyclic derivatives,

he

letter C, followed

by a dash, s used

before

the identifying number. Thus,

by

applying

the first

six rules,

the

formula

for

fluorocarbonC-318

s found

to be

RULE7. If the

compound

is

unsaturated, he number

one

1)

is

used

as the

fourth digit from the right to indicate

an unsaturateddouble

bond.

Using all rules above, he number for vinyl

chloride

is 1140;the

num-

ber for

tetrafluoroethvlenes

lll4.

2 .

J .

4 .

F F

l l

c l -c-c-c l

t l

F F

c lF

l l

c l -c-c

t l

F F

CF2

-

CF2

l l

CF2 - gP,

Fluorocarbon

-318