Aromaticity Effects on the Profiles of the Lowest Triplet-State Potential-Energy Surfaces for Rotation about the CC Bonds of Olefins with Five-Membered Ring Substituents: An Example of the Impact of Baird's Rule

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	Aromaticity Effects on the Profiles of the Lowest Triplet-State Potential-Energy Surfaces for Rotation about the CC Bonds of Olefins with Five-Membered Ring Substituents: An Example of the Impact of Baird's Rule
	Zhu, Jun ; Fogarty, Heather A. ; Mollerstedt, Helene ; Brink, Maria ; Ottosson, Henrik ; Zhu J(朱军)
刊名	http://dx.doi.org/10.1002/chem.201300008
	2013
关键词	CHIROPTICAL MOLECULAR SWITCH POLARIZABLE CONTINUUM MODEL INDEPENDENT CHEMICAL-SHIFTS EXCITED-STATE AQUEOUS-SOLUTION GROUND-STATE CARBON ACIDS ORGANIC-PHOTOCHEMISTRY DENSITY FUNCTIONALS VISIBLE-LIGHT
英文摘要	Carl Trygger Foundation; National Science Foundation of China [21103142]; Program for Changjiang Scholars and Innovative Research Team in University; Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School; A density functional theory study on olefins with five-membered monocyclic 4n and 4n+2 -electron substituents (C4H3X; X=CH+, SiH+, BH, AlH, CH2, SiH2, O, S, NH, and CH-) was performed to assess the connection between the degree of substituent (anti)aromaticity and the profile of the lowest triplet-state ( (1)) potential-energy surface (PES) for twisting about olefinic CC bonds. It exploited both Huckel's rule on aromaticity in the closed-shell singlet ground state (S-0) and Baird's rule on aromaticity in the lowest * excited triplet state. 2CH(C4H3X) were categorized as set A and set B olefins depending on which carbon atom (C2 or C3) of the C4H3X ring is bonded to the olefin. (0)-antiaromatic/ (1)-aromatic (C5H4+) to strongly S-0-aromatic/ (1)- antiaromatic (C5H4-). Our hypothesis is that the shapes of the (1) PESs, as given by the energy differences between planar and perpendicularly twisted olefin structures in (1) [E( (1))], smoothly follow the changes in substituent (anti)aromaticity. Indeed, correlations between E( (1)) and the (anti)aromaticity changes of the C4H3X groups, as measured by the zz-tensor component of the nucleus-independent chemical shift NICS( (1);1)(zz), are found both for sets A and B separately (linear fits; r(2)=0.949 and 0.851, respectively) and for the two sets combined (linear fit; r(2)=0.851). For sets A and B combined, strong correlations are also found between E( (1)) and the degree of S-0 (anti)aromaticity as determined by NICS(S-0,1)(zz) (sigmoidal fit; r(2)=0.963), as well as between the (1) energies of the planar olefins and NICS(S-0,1)(zz) (linear fit; r(2)=0.939). (1) PESs suitable for adiabatic Z/E photoisomerization.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/88950]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Zhu, Jun,Fogarty, Heather A.,Mollerstedt, Helene,et al. Aromaticity Effects on the Profiles of the Lowest Triplet-State Potential-Energy Surfaces for Rotation about the CC Bonds of Olefins with Five-Membered Ring Substituents: An Example of the Impact of Baird's Rule[J]. http://dx.doi.org/10.1002/chem.201300008,2013.
APA	Zhu, Jun,Fogarty, Heather A.,Mollerstedt, Helene,Brink, Maria,Ottosson, Henrik,&朱军.(2013).Aromaticity Effects on the Profiles of the Lowest Triplet-State Potential-Energy Surfaces for Rotation about the CC Bonds of Olefins with Five-Membered Ring Substituents: An Example of the Impact of Baird's Rule.http://dx.doi.org/10.1002/chem.201300008.
MLA	Zhu, Jun,et al."Aromaticity Effects on the Profiles of the Lowest Triplet-State Potential-Energy Surfaces for Rotation about the CC Bonds of Olefins with Five-Membered Ring Substituents: An Example of the Impact of Baird's Rule".http://dx.doi.org/10.1002/chem.201300008 (2013).