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à|Ú4GÛÜÝÞ/ 3Ag + 3Bg + 2Au + Bu .S8F=>G Ag V Bg

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* 0.185 0.721 0.667 +* 0.185 0.721 0.667 +,,-=>ãÅn;³ë8lÕÖG)P**u ' u /<C2h( Aaa' u " Ag # $ ** 0*A, ac

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1.82a + 0.181b

0.863c&1.60d

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1.07a + 0.929b

0.110c1.06d&1.48e&1.33eQ6B2E¥öW<ÝbAc’c’

1.11a + 0.890b&0.973c0.534d

0.493e

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1.01c

1.00d

1.20e

&0.218eAab&0.410a + 0.411b&1.37c&0.271d0.789e&0.926eAbc’&0.907a + 0.909b

0.506c&0.965d&0.472e0.330eÅïðñ`å(3)cVQ|

Ag 532 nmR.vwW9BgrR)P*,st(u6aù;çW9FQ|GÚ4G!/Û"[1];#9F^u$%(G B &`Ú'û(Bc%x;ef<b1g V b2g Ú4@)
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1. D. Li, Z. Peng, L. Deng, Y. Shen, and Y. Zhou, Vib.

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(a)

(b)

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Spectrosc., 39 (2005) 191.

$##

56/cm!17É)5

*uü

1592

425

a = 3.03

1412

439

3.07

832

1310

5.32

682

3790

9.03

594

1740

6.12

1528

4870

c =100

1429

853

41.8

1340

3210

81.2

1308

853

41.4

1146

191

19.8

1612

253

d = 2.35

1452

5820

11.3

1218

822

4.23

1109

629

3.70

1039

776

4.11

488

498

3.29