The chemistry of inorganic fluorides in solution

22 M-10 THE CHEMISTRY OF INORGANIC

FLUORIDES IN SOLUTION

D. W. A. Sharp Chemistry Department, University of Glasgow, Glasgow G13 8QQ (U.K.) Electrochemical studies

have

been

carried

[MF~I~- (n = 0,1,2,3) where

lates

element.

The

M

out

on complex

hexafluorometal-

is a second or third row transition

results are given graphically below for

studies

in

non-

aqueous solvents where there is minimum interaction between the complex The

fluoride and the solvent. some

cases

quantitative

these

fluorides.

those

of

between

complex the

two

studies

examination The

of

the

allowed

trends

in

a qualitative

and

in

redox chemistry in

results for the fluorides are closely parallel to

chlorides sets

of

have

(see

below) The

data.

and

comparisons

will

be made

results permit generalisationson the

stability of oxidation states in these transition metal series.

The

existence of many new sbecies has been established. The electrochemical studies provide a predictive tool for the oxidising

and

power of complex fluorides and

reducing

chlorides

stability of the complexes to disproportionation. between

the

observed

and

for the

The relationship

redox potentials and established reactivity series

will be mentioned. This

work was carried out in conjunction with Mr. K. Moock (Glasgow

University), Drs.

G.A.

and

by

was supported

Heath SERC.

and

L.J. Yellowlees (Edinburgh University)