Structural studies of 1,3-oxazolidine-containing spiropyrans.

New 3'-(4-chlorophenyl)-5',5'-dimethyl-2'-oxospiro[(2 H)-chromene-2,4'-1,3-oxazolidine] was synthesized to study the donor influence of the chlorine atom at the N-phenyl substituent on the structure and photochromic properties of 1,3-oxazolidine-containing spiropyrans. Photochemical properties of synthesized 1,3-oxazolidine derivatives were studied at room temperature in toluene. The X-ray diffraction parameters for the new compound were compared with the data obtained earlier for similar spiropyrans. [ABSTRACT FROM AUTHOR]