secondary cells with lithium anodes and immobilized fused_salt
secondary cells with lithium anodes and immobilized fused_salt
secondary cells with lithium anodes and immobilized fused_salt
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,<br />
87.<br />
TABU 1<br />
X-RAY POWDER DIF'FRACTION DATA FOR C1O2bF6<br />
d. 51<br />
Relative<br />
Intensity d. A<br />
Relative<br />
Intensity<br />
7.50 70 2.30 10<br />
5.55<br />
5.10<br />
30<br />
30<br />
?.OR<br />
7.05<br />
60<br />
60<br />
4.40 70 1 e95 40<br />
4.02 40 1.87 10<br />
3.65<br />
3.57<br />
100<br />
90<br />
1 .a4<br />
1 .a0<br />
10<br />
10<br />
?.&9 10 1.76 10<br />
3.07<br />
2.87<br />
2.76<br />
2.69<br />
50<br />
-<br />
'lo<br />
- z ' lo 10<br />
c 10<br />
1.70<br />
1.59<br />
1.55<br />
1.57<br />
20<br />
15<br />
10<br />
10<br />
2.54 -<br />
fiepetion of PF5C12 <strong>and</strong> Cl10. A 1:1 mixture of PF C1 <strong>and</strong> Cl2O was<br />
7 2<br />
alloded to V ~ X T to room tempewture at which point pn infrared spectrum was<br />
tr.ken. ?!.e only infrared absorbinq material prePent WRS POF,. None of<br />
the PF7Cl , 8 strong intrnred absorber,. remined. ?he by-prdduct C12<br />
was reveeled by its color when frozen. Wo non-voletile solids were<br />
observed.<br />
' .';<<br />
. I<br />
e.,<br />
Zesults wid Discussion<br />
The reaction bf C1 0 <strong>with</strong> AsF does cot give the odd molec,de ClOAsF<br />
5<br />
but Fives instep< %'hp szlt C1O2AsF2. Further, the reaction.eppesrs to<br />
follow the stoichiometry shown in equetion 1:<br />
5Cl2O + 3AsF 5 2C102AsF6 + 4C12 + AsOF, (1)<br />
The resction stoichiometry does not appar to be de2endent on the experi-<br />
mente1 reactant mtios. The formation of C10 AsF w2s confirmed by preparing<br />
an quthentic sazgle find compering their X-ray2pateerns.<br />
FC102 + AsF5 _3 C102AsF6 (2)<br />
-<br />
In the reaction of C1 0 <strong>with</strong> AsF5, the evciution of C1 apparently involyes<br />
2 2<br />
r~ch more com?lcx process thqn 2 sicple C1-0 bond rupture. The equation<br />
reaortedl for this procesc st -50' is s5own in equation 3:<br />
C120*AsF 5 C10AsF5 + 1/2 Clp<br />
(3)<br />
We would prefer to propose an initial step thet infers an ionization of<br />
C1 0, i.e., sn ionic comnlex is obtpined, perhaps ClO+AsF C1-:<br />
2 5<br />
Cl20 + AsF5 __* CIOAsFSCl (4)<br />
The oxidfition of the C10+ species could then proceed <strong>with</strong> ad3itional C1 0:<br />
2<br />
Cl20 + C10AsF5C1 __+ C1O2AsF5C1 + C12<br />
This step (aqustion 4) should not be considered unusual inasmuch as other<br />
chlorine oxi4es are capsble of redox (e.g., C102 gives some C1206 on<br />
photolysis9) -<br />
(5)