Abstract
Vibrational transition moment directions of s-trans-1,3-butadiene were deduced from measurements of its IR linear dichroism on samples partially oriented (i) by photoselective photoiosomerization of s-cis-1,3-butadiene isolated in inert-gas matrices with linearly polarized light, (ii) in stretched polyethylene, and (iii) in stretched poly(ethylene-d 4 ). The moment directions are in quite good agreement with those predicted by theory at the MP2/6-311G** level of approximation. For two plausible mechanisms of s-cis to s-trans isomerization, it predicts the observed near coincidence of the C 1 -C 4 directions. For another reaction path, it predicts a 30 o angle between them. However, at present, it is unknown whether matrix photoisomerizations indeed proceed without exertion of a net torque on the environment
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
