@article {2904, title = {CRYSTAL-STRUCTURE CORRELATIONS IN THE PHOTOCHEMISTRY OF DIMETHYL 9-PHENYL-9,10-DIHYDRO-9,10-ETHENOANTHRACENE-11,12-DICARBOXYLATE}, journal = {Acta Crystallographica Section B-Structural Science}, volume = {49}, year = {1993}, note = {ISI Document Delivery No.: LU318Times Cited: 15Cited Reference Count: 12Part 4}, month = {Aug}, pages = {754-760}, type = {Article}, abstract = {{A study of the photochemistry of the title 9-phenyl-dibenzobarrelene-11,12-diester (1) reveals the formation of a semibullvalene derivative, dimethyl 8b-phenyl-4b,8b,8c,8d-tetrahydrodibenzo[a,f]cyclopropa[cd]pentalene-8c,8 d-dicarboxylate (2), in acetone solution, with an additional cyclooctatetraene (COT) photoproduct, dimethyl 5-phenyldibenzo[a,e]cyclooctene-6,12-dicarboxylate (3), in acetonitrile, benzene and in solid-state photolysis. Crystal data: T = 294 K, Cu Kalpha}, keywords = {DIBENZOBARRELENE, PHOTOISOMERIZATION, REARRANGEMENT, SOLID-STATE PHOTOCHEMISTRY}, isbn = {0108-7681}, url = {://A1993LU31800026}, author = {Pokkuluri, P. R. and Scheffer, J. R. and Trotter, J.} }