1928
The Journal of Physical Chemistry, Vol. 83, No. 14, 1979
Additions and Corrections
ADDITIONS AND CORRECTIONS 1977, Volume 81 J. E. Leibner and John Jacobus*: Charged Micelle Shape and Size. Page 132, Column 1. Delete the third sentence of the first full paragraph beginning, "Similar ...". This statement is not correct in the context in which it is written, i.e., with the constant volume, constant eccentricity constraint. -John Jacobus 1978, Volume 82 P. J. Evans and E. Tschuikow-Roux*: Thermodynamic Properties of Tetrafluorohydrazine and the Difluoroamino Radical. Page 184. Owing to a computational error, the heat of formation of NF2(g)was incorrectly reported as 7.8 f 1.0 kcal mol-'. The value obtained from our measurements and the JANAF preferred enthalpies of formation for NF3(g) and F(g) is mf0298[NF2(g)] = 6.9 f 1.0 kcal mol-'. Page 185. The above revision modifies the reported value for AHHfO,,,[N,F,(g)]. The last sentence on this page will now read as follows: Finally, by using the values of AHoB8[II]= 20.9 kcal mol-I and AH:298[NF2(g)] = 6.9 kcal mol-I determined in this study, a revised value of AHHf0298[N2F4(g)] = -7.1 f 1.4 kcal mol-I is obtained.-P. J. Evans
D. B. Bechtold, G. Liu, H. W. Dodgen, and J. P. Hunt*: An Oxygen-17 Nuclear Magnetic Resonance Study of the Aquo Nickel(I1) Sulfate System. Page 334, Table I. The value for T , ~ s~ X~ 1,0" should be 1.23 f 0.04 rather than 12.3 f 0.4-J. P. Hunt
K. Murakami and J. Sohma*: Comparison of Molecular Motions Detected by the Spin Label Technique and Carbon-13 Nuclear Magnetic Resonance in Benzene Solution by Poly(methy1 methacrylate). Page 2825. The captions for the figures should be as follows: Figure 1. The ESR spectrum of spin-labeled PMMA in C6Hs (concentration 0.015 g/cm3) a t 41 "C. Figure 2. Magnified spectra of the central peak ( M I = 0) a t various temperatures. Figure 3. Simulated spectra with various line widths: (A) 0.38 G, (B) 0.35 G, (C) 0.30 G. Figure 4. The parameter Kl/K2 is defined by this spectrum. Figure 5. The calibration curve of parameter K1/KZ vs. line widths used in the simulations. Figure 6. Arrhenius plot of the rotational correlation times of the spin-labeled PMMA with various concentrations: (0)6 X lo-, g/cm3; (A) 3 X g/cm3; ( 0 )1.5 x g/cm3. Figure 7. The effective rotational radii UNO^ and ( 1 0 ~ and its spherical model. -J. Sohma 1979, Volume 83
Richard J. Watts* and Steven F. Bergeron: Proton Phototautomerism in a Metal Complex. Determination of pK,* for a Monodentate 2,2'-Bipyridine Complex of Iridium(II1). Page 424. Structure 111 in the proton phototautomerization should be as follows:
R. F. Firestone,* T. Oka, S. Takao, and M. F. Beno: Analytic Form Laws for the Absorption of Light from a Continuum Source by Isolated Lorentzian Lines in the Spectrophotometric Monitoring of Fast Reactions of Excited Atoms. Page 2187. In Table I, the heading for column 12 should read -a2 X 102.-R. F. Firestone.
I
Alfred S. Gates and Jimmie G. Edwards*: Vapor Pressures, Vapor Compositions, and Thermodynamics of the ZnGazS4-ZnGa8S13 System by the Simultaneous Knudsen and Dynamic Torsion-Effusion Method.
-Richard
Page 470, Table 11. Under column Kd(MX),t-BuOH, instead salt KC1, the Kd(MX)value should be 6.1 X of 6.1 X In the same column, salt KBr, the Kd(MX) value should be 1.1 X instead of 1.1 X The heading on right-hand side of the table should be pKsP(MX) instead of K6P(MX).-I. M. Kolthoff
+
= ( ~ T R ) ~ / ~ / ( WW,A,) ~A,
(13) The heading of column 3 in Table IV should be A / 104K.-Jimmie G. Edwards
0022-3654/79/2083-1928$0 1.OO/O
J. Watts
I. M. Kolthoff* and M. K. Chantooni, Jr.: Acid-Base Equilibria of Hydrochloric and Hydrobromic Acids in Isopropyl and tert-Butyl Alcohols.
Pages 2789-2797. Equations 5 and 13 should be corrected as follows: P* = (dg/dt)(2~RT/M*)'i2/(W,A,+ WZAJ (5)
p
I11
C
1979 American Chemical Society
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