Spectroscopic and Thermodynamic Study of the Conformational

Publication Date: February 1981. ACS Legacy Archive. Cite this:J. Phys. Chem. 1981, 85, 4, 462-462. Note: In lieu of an abstract, this is the article'...
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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)