462
The Journal of Physical Chemistry, Vol. 85, No. 4, 1981
Additions and Corrections
1 -__---
kr
kiac
2 kisc+ kf kp + k,
I
I
1.0
Binaphthylll 0-2 rn01,drn'~
+
2 .o
r2 =
+
Flgure 3. Dependence of I / K ( = k , / k , (k,/k,)[k,/(k, k,)][BN]) on the concentration of 1,l'-binaphthyl.
of binaphthyl, and therefore in this concentration range eq I can be approximated by 1 --kisc k* 1 @Ipac =2 kkc + kf K , + k, 1 - r1 2
kist
kist + k f
_ I _
kp
+ kt[BNI kp
kr
k,
+ k, + kt[BN]
(111)
k,[BNI kr kp + kt[BNl + kq[Q1 kp + k,
Under the same conditions, as in the case of eq (I), the concentration OfbinaPhthYl being in the range of -1.0 x mol dms, eq I11 can be approximated by
~
1 =-
1 - r2
where
i
O;
1- r2"+'
2 kisc + kf
(ID
since r1 < 1. In the presence of the triplet quencher, the racemization quantum yield is derived as follows:
1+
kpkt[BNl' + kq[Q1
)
k,
kr
+ k, + kp +k kJQ1 p kJBN]
since r2 < r1 < 1.
ADDITIONS AND CORRECTIONS 1980, Volume 84
J. R. Durig* and D. A. C . Compton: Spectroscopic and Thermodynamic Study of the Conformational Properties and Torsional Potential Functions of l-Butene. Page 779. In Table IV, values for Se and -(Ge - Hoe)/T were unfortunately overestimated by a factor of X J t In 2, as this statistical factor was duplicated in the calculations. Hence these values should be lowered by 5.763Xg J K-' mol-'; this brings the value of Se at 298.15 K to 306.4 J K-' mol-', only slightly higher than the previously tabulated value (ref 17) of 305.6 J K-'mol-'.
(IV)
