CORRECTIONS

In the article by I. L. Knunyants, V. V. Shokina, and Li Chzhi-yuan, “Perfluorodienes,” published in DAN, vol. 129, No. 2, 1959:

on p. 328, line 15, the reaction scheme should read:

\[ n \cdot \mathrm{CF}_2=\mathrm{CF}_2+\mathrm{CF}_2\mathrm{Cl}-\mathrm{CFClJ} \to \mathrm{CF}_2\mathrm{Cl}-\mathrm{CFCl}(\mathrm{CF}_2-\mathrm{CF}_2)_{n-1}\mathrm{CF}_2\mathrm{CF}_2\mathrm{J}; \]

on p. 330, line 29, instead of the printed “104 g of tetrachlorodecadiene,” read: “104 g of tetrachlorodecane.”

In the article by I. L. Knunyants, E. Ya. Pervova, and V. V. Tyuleneva, “Esters of perfluoroalkenylphosphinic acids,” published in DAN, vol. 129, No. 3, 1959:

a) on p. 576, line 15, the left-hand part of the formula should read:

\[ {>} \mathrm{C}=\mathrm{CF}_2 + :\mathrm{P} \begin{matrix} \mathrm{OR}\\ |\\ \mathrm{OR}\\ |\\ \mathrm{OR} \end{matrix} \to \cdots \]

b) on p. 576, line 9 from the bottom, the series depicting activity in a series of olefins should read:

\[ \begin{matrix} \mathrm{CF}_2-\mathrm{CF}\\ | \qquad \|\\ \mathrm{CF}_2-\mathrm{CF} \end{matrix} > \begin{matrix} \mathrm{CF}_3\\ \mathrm{CF}_3 \end{matrix} {>} \mathrm{C}=\mathrm{CF}_2 > \mathrm{CF}_3\mathrm{CF}=\mathrm{CF}_2 > \mathrm{CF}_2=\mathrm{CF}_2 \]

In the article by B. V. Vartapetyan and A. L. Kursanov, “Study of the oxidative condensation of catechins with the aid of \( \mathrm{O}_2^{18} \) and \( \mathrm{H}_2\mathrm{O}^{18} \),” published in DAN, vol. 129, No. 2, 1959:

on p. 448, line 8, instead of \( \mathrm{H}_2\mathrm{O}_2^{18} \) there should be \( \mathrm{H}_2\mathrm{O}^{18} \);

on the same page, the next-to-last line of Table 1 refers to the variant

\[ \mathrm{H}_2\mathrm{O} - \mathrm{O}_2^{18}, \]

on p. 449, line 27, instead of \( \mathrm{H}_2\mathrm{O} - \mathrm{H}_2^{18} \) there should be \( \mathrm{H}_2\mathrm{O} - \mathrm{O}_2^{18} \).