3434 Table I. Spectral Data I-
Compd 4 5ad 6ad 7d 10 lld 12d
Solvent
Xrnsx,
mp
log e
EtOH bCSH18 Vapor MeOHe
217 21@ 209 203
3.87 3.86
i-CsHi8'
193
MeOHh i-CsHish MeOHj i-CsH1sk MeOH2 i-CsHism
-
Ultraviolet"
Amax,
210 200 202 197 201 193
mp
log e 2.36 2.43
3.88
395 390 385 231
4.12
226
3.80
,
..
H2
Ha
HI
3.50
Nm,b T H5 t-Bu
5.07
8.83
.cm-lb
k , 1. mole-lsec-l (dimerization)
1708
2 . 4 X 10-'(25')
UC-O,
Other J3.6
1.7Hz
... 3.80
3.35 7.12 ( W E= 1 . 1) ( W H= 1 . 5 )
...
i
375
I
4.71 3.94 4.14 3.73 3.88
cU.380
>1.9 4.04 4.00 4.00 4.07 4 . 3 7 4.02
231 223 233 225
...
3.309
...
...
...
... ...
6 . 6 2 7.28
T
4.13 (doublet) 1700
T
6.88 (doublet)
8.78Jz,a=l.OHz 9.00 8.82 J z 1 4 ~Hz 1
1765 16959 17659
102 ( -20")
1710 1790 1698
, , ,A values reliable to 1 3 mp due to broadness of bands. In CCh. Broad band
