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Research Article Open access CC BY 4.0

The Static (Hyper) Polarizabilities of Push-Pull Polyenes: A Theoretic Study

Qingxu Li, Ziting Yong, Yan Zeng

Asian Journal of Chemical Sciences · pp. 1–6 · Published 8 May 2018

10.9734/AJOCS/2018/41290

Abstract

We have studied the static longitudinal polarizability, and first and second hyperpolarizabilities of push-pull conjugated polyenes (NH2-(CH=CH)N-NO2) within finite field scheme. Ab initio methods and density functional theory (DFT) are used to evaluate electron correlation effects. B3LYP and CAM-B3LYP are compared with second-order Møller-Plesset perturbation theory (MP2) and highly reliable coupled cluster theory with single and double excitations (CCSD). Our study shows CAM-B3LYP fails to predict correct correlation contributions, and MP2 is also unsatisfactory. CCSD is the only reliable computational tool to this day.

Polarizability first and second hyperpolarizabilities electron correlation effects MP2 CCSD CAM-B3LYP

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