Photochromic properties of spiro[fluorene-chromenes]

Authors
Aldoshin, S Chuev, I Filipenko, O Pozzo, JL Lokshin, V Pepe, G
Citation
S. Aldoshin et al., Photochromic properties of spiro[fluorene-chromenes], ACT CRYST C, 54, 1998, pp. 1720-1722
Citations number
8
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
01082701 → ACNP
Volume
54
Year of publication
1998
Part
11
Pages
1720 - 1722
Database
ISI
SICI code
0108-2701(19981115)54:<1720:PPOS>2.0.ZU;2-V
Abstract
Two annelated spiro [fluorene-chromene] structures, spiro[2H-benzo[h]chrome ne-2,9'-fluorene], C25H16O, and 9,10,11,12-tetrahydrospiro[3H,8H-cyclohepta [4,5]furano[3,2-f]chromene-2,9'-fluorene], C28H22O2, have been analysed in order to define the effect of introducing a spiro-C atom into the pyran rin g on the photochromic properties of the chromenes. The results are compared with those obtained for previously studied non-spiro 2,2-substituted chrom enes.