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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)

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