The Journal of Physical Chemistry, Vol. 95, No. 8, 1991 3445
ADDITIONS AND CORRECTIONS 1990,Volume 94
K.Kbbore,* H.K.SI",a d G. J. MaStructural Effects on the Vaporization of High Molecular Weight Esters.
0
J1 ?*
Pages 1645-1646. There is an error involved in the calculation of AG* due to the mistake committed in taking the units of viscosity. Accordingly, AG' values in Tables VII, VIII, and XI and the AS' values in Tables IX and X change. The corrected Tables VII, VIII, IX, X,and XI, by taking the viscosity unit as poise in AG' calculation, are given. However, AW and n values in Tables VI1 and VI11 remain unchanged. The corrected copy of Figure 4 is also given. Consequent to the above, empirical equations ( 5 ) and ( 6 ) change as follows: dialkyl sebacate ester series
AG' = 0.075AEv+ 17.08
/
29
9
71
!-
/
-' I /
(5) 0
triglyceride ester series
AG' = 0.066AEv+ 17.55 The entire discussion, however, remains immutable.
Dialkyl sebacate ester series Triglyceride ester series
40
80
120
160
200
AEV ( k J mol-')
(6)
Figure 4. Free energy of activation for viscous flow (AG') as a function of energy of vaporization (A&) at 371.1 K.
TABLE VII: Kinetic Data on the Dialkyl Sebacate Eater Series' AG', kJ mol-l, at "pd 301.1 K 330.9 K 371.1 K 420.2 K DBS 21.8 f 0.9 22.2 f 0.9 22.8 f 0.9 23.9 f 0.9 23.5 f 0.9 24.2 f 1.0 25.2 f 1.0 DHS 23.3 f 0.9 24.8 f 1.0 25.2 f 1.0 26.2 f 1.0 DOS 24.6 f 1.0 DDS 25.6 f 1.0 26.3 f 1.1 27.5 f 1.1 27.6 f 1.1 28.8 f 1.2 DDoS 26.9 f 1.1 29.7 f 1.2 DTeS 28.4 f 1.1 DHeS 29.4 f 1.2 30.7 f 1.2 31.3 f 1.3 DOcS 30.0 f 1.2
468.1 K 24.6 f 1.0 26.4 f 1.1 27.4 f 1.1 28.7 f 1.1 30.1 f 1.2 31.0 f 1.2 32.1 f 1.3 32.8 f 1.3
d
515.8 K 25.6 f 1.0 27.1 f 1.1 28.1 f 1.1 30.2 f 1.2 31.7 f 1.3 32.5 f 1.3 33.6 f 1.3 34.3 f 1.4
M ,kJ mol-'
515.8 K 25.2 i 1.0 26.3 f 1.1 28.9 f 1.2 30.6 f 1.2 32.1f1.3 33.2 f 1.3 34.4 f 1.4 35.2 f 1.4
AH*,kJ mol-'
d
17.7 f 1.4 18.7 f 1.5 20.1 f 1.6 20.4 f 1.6 20.5f1.6 20.8 f 1.7 20.9 f 1.7 20.9 f 1.7
4.58 5.18 5.75 6.23 6.98 7.29 7.77 8.16
16.2 f 17.2 f 18.4 f 19.1 f 19.7 f 20.0 f 20.2 f 20.2 f
1.3 1.4 1.5 1.5 1.6 1.6 1.6 1.6
5.27 5.63 5.80 6.14 6.53 6.94 7.39 7.61
#The maximum error involved in AG* is f 4 % and in AH' it is f8%. bAEv/AH*= n.
TABLE VIII: Kinetic Data on the Triglyceride Eater Series' AG*, kJ mol-', at compd 301.1 K 330.9 K 371.1 K 420.2 K TB 21.8 f 0.9 21.7 f 0.9 22.1 f 0.9 22.9 f 0.9 23.4 f 0.9 23.8 f 0.9 24.8 f 1.0 TC 23.3 f 0.9 TO 25.0 f 1.0 24.9 i 1.0 25.4 f 1.0 26.5 f 1.1 TD 26.6 f 1.1 26.7 f 1.1 26.9 f 1.1 27.9 f 1.1 TL 27.7f1.1 28.1fl.1 29.2f1.2 30.3 f 1.2 TM 29.1 f 1.2 31.4 f 1.3 TP 30.3 f 1.2 32.1 f 1.3 TS 31.0 f 1.2 'The maximum error involved in AG* is f4% and in AH*it is f8%.
468.1 K 24.0 f 1.0 25.9 i 1.0 27.4 f 1.1 29.2 f 1.2 30.6f1.2 31.7 f 1.3 32.8 f 1.3 33.5 f 1.3
AEJAH' = n.
TABLE I X Entromy of Activation for Viscow Flow of Diakyl Sebscate Ester Series at Various Temwmtures' AS', J deg-' mol-', at compd 301.1 K 330.9 K 371.1 K 420.2 K 468.1 K DBS -18.5 f 2.2 -18.1 f 2.2 -17.8 f 2.1 -18.3 f 2.2 -17.9 f 2.1 -19.0 f 2.3 -18.9 f 2.3 -19.0 f 2.3 -19.7 f 2.4 DHS -20.3 f 2.4 DOS -20.6 f 2.5 -19.3 f 2.3 -18.3 f 2.2 -19.2 f 2.3 -19.2 f 2.3 DDS -19.6 f 2.3 -19.4 f 2.3 -19.9 f 2.4 -20.5 i 2.4 -21.3 f 2.5 -21.6 f 2.6 -22.2 f 2.6 DDoS -21.7 f 2.6 DTeS -22.6 f 2.7 -23.1 f 2.8 -23.5 f 2.8 DHeS -24.8 f 2.9 -24.9 f 2.9 -25.4 f 3.0 -26.4 i 3.2 -26.9 f 3.2 DOcS -26.4 f 3.2 #The maximum error involved in AS' is f12%.
515.8 K -18.2 f 2.2 -19.2 f 2.3 -18.8 f 2.2 -21.5 f 2.6 -23.3 f 2.8 -24.2 f 2.9 -25.9 f 3.1 -27.3 f 3.3
3446 The Journal of Physical Chemistry, Vol. 95, No. 8, 1991
Additions and Corrections
TABLE X EntroDv of Activation for Viscous Flow of Triglyceride Ester Series at Various Temperatures" AS*, J de& mol-',at compd 301.1 K 330.9 K 371.1 K 420.2 K 468.1 K -13.6 f 1.6 -13.5 f 1.6 -12.1 f 1.4 -11.9 f 1.4 TB -13.6 f 1.6 -13.7 f 1.6 -14.5 f 1.7 -15.4 f 1.8 TC -15.3 f 1.8 -14.2 f 1.7 -14.3 f 1.7 -15.2 f 1.8 -15.6 f 1.8 TO -16.3 f 1.9 -14.5 f 1.7 -17.5 f 2.1 -17.8 f 2.1 -18.8 f 2.2 TD -20.6 f 2.5 -19.0 f 2.3 TL -2 1.8 f 2.6 -20.5 f 2.4 -20.5 f 2.4 -21.6 f 2.6 TM -22.4 f 2.7 -22.6 f 2.7 -23.3 f 2.8 -24.5 f 2.9 -25.4 f 3.0 TP -25.3 f 3.0 TS -27.2 f 3.2 -26.6 f 3.2 -26.9 f 3.2
515.8 K -14.5 f 1.7 -16.7 f 2.0 -17.1 f 2.0 -19.8 f 2.4 -24.6 f 2.9 -24.0 f 2.9 -26.2 f 3.1 -27.7 f 3.3
'The maximum error involved in AS* is f12%.
TABLE XI: Free Energy of Activation for Viscous Flow and the Energy of Vaporization at 371.1 K for Dialkyl Sebacate and Triglyceride Ester Series" compd AE,, kJ mol-' AG', kJ mol-' "pd AEv, kJ mol-' AG*,kJ mol-l 22.1 f 0.9 22.8 f 0.9 TB 72.8 f 2.2 DBS 80.3 f 2.4 TC 93.9 f 2.8 23.8 f 0.9 DHS 93.4 f 2.8 24.2 f 1.0 TO 118.7 f 3.6 25.4 f 1.0 DOS 106.2 f 3.2 25.2 f 1.0 TD 135.6 f 4.1 26.9 f 1.1 DDS 122.5 f 3.7 26.3 f 1.1 28.1 f 1.1 27.6 f 1.1 TL 158.6 f 4.8 DDoS 136.8 f 4.1 TM 175.1 f 5.3 29.1 f 1.2 DTeS 151.4 f 4.5 28.4 f 1.1 TP 191.0 f 5.7 30.3 f 1.2 DHeS 163.0 f 4.9 29.4 f 1.2 31.0 f 1.2 30.0 f 1.2 TS 207.9 f 6.2 DOCS 175.3 f 5.3 'The maximum error involved in AE, is f3% and in AG* it is f4%.
