CRYSTALLOGRAPHY

On crystal- and molecular structure of photochromic spiropyrane, $\mathrm{C}_{19}\mathrm{H}_{18}\mathrm{N}_2\mathrm{O}_3$

K. Sh. Karaev, N. G. Furmanova, N. V. Belov

Institute of Cristallography of the USSR Academy of Sciences, Moscow

UDC: 548.737

Received: 22.05.1981