r1 r2 e1 e2 h h 0.35 0.77 me me 0.26 0.62 ome ome 0.44 0.68 sme sme 0.51 0.78 (ch=ch)2 (ch=ch)2 0.62...

35
'%*+#"! )'4+3% &)HOMO1,0)LUMO.%4+3 (2 %/ $/'*+#"! 6*5-#"

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HOMO LUMO

25°C

NHE: 2H+ + 2e = H2

-

i = nFv

Ox + ne- Red

Ox

Red Ox + ne-

(a) Red

(b) ( )

Ox

(b)

( )

cm2/s)

k>10-2

10-2 >k>10-4

10-4 > k

reversible)

k>10-2 cm/s)

irreversible) quasi-reversible)

k<10-4 cm/s)

-

Red Ox + ne-

CR, CO

DR, DO: R O

CR*:Red

HOMO LUMO

TCNQ

CN

CNNC

NCOO

S

S S

S

TTF

TTF TCNQ

+•-e

+e +e

-e

-

- -

-e

+e

-e

+e

TCNQ TCNQ-• TCNQ2-

+ +

CNNC

NC CN

S

SS

S

CNNC

NC CN

CNNC

NC CN

S

SS

S S

SS

S

TTF TTF+• TTF2+

p-

R E1 E2

H -0.37 -1.15

Me -0.55 -1.50

OMe -0.36 -1.23

SMe -0.29 -1.23

Br -0.14 -0.80

Cl -0.03 -0.76

O

OR

R

2,3-

p-

R1 R2 E1 E2

H H -0.32 -1.07

Me Me -0.69 -1.51

OMe OMe -0.47 -1.24

I -0.14 -0.80

Br Br +0.21 -0.56

Cl Cl +0.22 -0.58

F F +0.21 -0.67

Cl CN +0.62 -0.11

O

OR2

R2R1

R1

V vs. Ag/AgCl, in CH2Cl2, Bu4NBF4

TTF

R1 R2 E1 E2

H H 0.35 0.77

Me Me 0.26 0.62

OMe OMe 0.44 0.68

SMe SMe 0.51 0.78

(CH=CH)2 (CH=CH)2 0.62 0.94

SMe H 0.44 0.77

SMe CO2Me 0.83 1.22

SMe CN 1.04 1.32

V vs. SCE, in PhCN, Bu4NClO4

S

S S

S R2

R2R1

R1

1,3- [5]

S

SS

S

SS

SS

SS

SS

SS

S

S

SS

S

SO

SS

S

S

SS

S

SSS

1,3- [5]

SS

S

S

SS

S

SSS

R

R

RR

R

RR

R

R

R

SS

S

S

SS

S

SSS

R

R

RR

R

RR

R

R

R

+

+

+

+

+

+

+

+

+

5 5

S

S

S

S

S

S

S

S

SS

S

S

SS

S

SO

SS

S

S

SS

S

SSS

R

R

R

RR

R

R

R

R

R

R

RR

R

R

RR

R

RR

R

RR

R

R

R

SS

S

S

SS

S

S

R

R

R

RR

R

R

R

SS

S

S

SS

S

SOH

R

R

R

RR

R

R

R

SS

S

S

SS

S

S

R

RR

R

R

R

H

1

+

+

+

+

+

+

+

+

+

+

+ +

+

5

+

+

+

+

+

+

+

+

+

+

+

+

7

2R = -(CH=CH)2-

+1.59 V

+1.22 V

+0.63V

R

R

+0.36V

+0.70V +0.37V

HOMO LUMO

S

S

S

S

S

S

S

S

S

S S

S

Pb(OAc)4

CF3CO2H54%

S

S S

S

S

S

S

S -e

+e

-e

+eS

S

S

S +.

S

S

S

S 2+

++S

SS

S

TTF2+

-e

+e

-e

+e•+

S

SS

S

TTF+.TTF

S

S S

SS

S S

S S

S S

S

E1 = -0.11, E2 = -0.44 V E = 0.00 V E = 0.40 V

X

S

S S

S

1,3- [6]

S

S

S

S

Br

Br

Ni(PPH3)4/Zn-Cu

R

R

R

R

SS

S

S

S

S

S S

S

S

S

S

3b,c

R = CO2Me, 2R = -(CH=CH)2

R

R

R

R

R R

R

R

R

R

RR

DMF

1,3- [6]

1,3- [6]

(3) (3’)

1,3-