share
Acta Chimica Sinica ›› 1998, Vol. 56 ›› Issue (6): 612-617. Previous Articles Next Articles
Original Articles
张文勤;张明杰;王家喜;杨学茹;王淑丽;江琴;安颖
发布日期:
ZHANG WENQIN;ZHANG MINGJIE;WANG JIAXI;YANG XUERU;WANG SHULI;JIANG QIN;AN YING
Published:
Share
Crystal structure of r-1, c-2, t-3, t-4-1, 3-bis(4-methylphenyl)-2, 4-bis(4-pyridyl) cyclobutane (DMDPC) was determined by X-ray diffraction method. The crystal is monoclinic, space group is P21/c, with a=1.1376(6), b=1.7379(8), c=1.1590(5)nm, β=106.16(4)ⅲ, Z=4. The cyclobutane ring has a puckered conformation because of repelling of the pyridine ring and benzene ring at the same side of the four-membered ring. It was found that the cyclobutane ring of DMDPC would be opened when irradiated under short wave UV light, trans-1-(4-methylphenyl)-2-(4-Pyridyl)ethene(E-MEP) was reproduced, then some of E-MEP was changed to its cis isomer. The ratio of trans to cis isomer was controlled by the wave length of irradiating light.
Key words: PYRIDINE P, PHOTOCHEMICAL REACTION, INFRARED SPECTROPHOTOMETRY, ELEMENTAL ANALYSIS, X-RAY DIFFRACTION ANALYSIS, MASS SPECTROGRAPHY, ETHYLENE P, PROTON MAGNETIC RESONANCE SPECTROMETRY, CYCLOBUTANE P, PHOTOLYTIC REACTION
CLC Number:
O644
ZHANG WENQIN;ZHANG MINGJIE;WANG JIAXI;YANG XUERU;WANG SHULI;JIANG QIN;AN YING. Studies on the photochemical reaction of heteroarylethenes 2: Structure and chemical properties of r-1, c-2, t-3, t-r-1, 3-bis(4-methylphenyl)-2, 4-bis(4-pyridyl)cyclobutane[J]. Acta Chimica Sinica, 1998, 56(6): 612-617.
Export EndNote|Reference Manager|ProCite|BibTeX|RefWorks