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Zhang F, Feng Y, Song X, Bu Y. Enhancing magnetic coupling through protonation of benzylideneaniline-bridged diradicals and comparison with stilbene- and azobenzene-based diradicals. RSC Adv 2022; 12:31442-31450. [PMID: 36349011 PMCID: PMC9627958 DOI: 10.1039/d2ra05115j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/27/2022] [Indexed: 09/10/2023] Open
Abstract
Taking nitroxide radicals as spin sources, we explore the intramolecular magnetic coupling interactions of the trans- and cis-forms of benzylideneaniline (BA)-bridged diradicals, in which the central -CH[double bond, length as m-dash]N- unit can undergo single protonation to convert to its protonated counterpart or vice versa. The calculated results for these two pairs of diradicals (protonated versus unprotonated trans and cis forms) verify that the signs of their magnetic coupling constants J do not change, but the magnitudes significantly increase after protonation. In the structure, the better conjugation of the protonated trans diradical and two reduced CCNC and CCCN torsion angles of the protonated cis one make for a more efficient spin transport, promoting the spin polarization, thus leading to larger spin couplings. In terms of mechanism, the proton-induced magnetic enhancement should be attributed to strong participation of the coupler BA through its lowest unoccupied molecular orbital (LUMO) with a lower energy level after protonation, and the small HOMO-LUMO (HOMO: highest occupied molecular orbital) gap of the coupler BA through protonation is crucial in explaining such remarkable spin-coupling enhancement. Furthermore, different linking modes of the radical groups to the couplers are also considered to confirm our conclusions. In addition, we also make a comparison of the magnetic coupling strengths among their isoelectronic analogues of BA-, AB- and stilbene-bridged nitroxide diradicals before or after protonation, and find a linear correlation among them. It should be noted that the magnetic behaviors of all these diradicals obey the spin alternation rule and singly occupied molecular orbital (SOMO) effect. This work provides helpful information for the rational design of promising magnetic molecular switches.
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Affiliation(s)
- Fengying Zhang
- Department of Materials Science and Engineering, Jinzhong University Jinzhong 030619 People's Republic of China
| | - Yiwei Feng
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Xinyu Song
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Yuxiang Bu
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
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Kara YS, Yıldız B. Synthesis and substituent effect study on 13C NMR chemical shifts of 4-(substitue-phenyl)-6-methyl-3-phenyl-4H-1,2,4-oxadiazin-5(6H)-one. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Irudaya Jothi A, Rajarathinam C, Arun Viveke A, Bosco Paul MW. Substituent effects on the mesogenic benzylidenes of 4-methylaniline: Synthesis, characterization, DFT, NLO, photophysical, molecular docking, and antibacterial studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Cao C, Yan L, Cao C, Qu J. Influence of substituent and push‐pull effect on the chemical shifts of the carbon in bridging bond of 1‐furyl/thienyl‐2‐arylethylene. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4160] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Chao‐tun Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan Hunan Province China
| | - Lu Yan
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan Hunan Province China
| | - Chenzhong Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan Hunan Province China
| | - Junyan Qu
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan Hunan Province China
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Fang Z, Tan S, Wu F, Jiao Y, Au C, Wang Y, Shen J, Yi B. Solvent and substituent effects on ultraviolet absorption properties of Schiff bases—models of molecular-core of mesogenic compounds. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128590] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Yuan H, Chen PW, Li MY, Zhang Y, Peng ZW, Liu W, Paton RS, Cao C. Effects of substituents X and Y on the NMR chemical shifts of 2-(4-X phenyl)-5-Y pyrimidines. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127489] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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7
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Wang L, Cao C, Cao C. Substituent effects on the stretching vibration of C═N in multi‐substituted benzylideneanilines. J PHYS ORG CHEM 2019. [DOI: 10.1002/poc.3969] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Linyan Wang
- School of Materials Science and EngineeringHunan University of Science and Technology Xiangtan China
- Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and ConversionHunan University of Science and Technology Xiangtan China
| | - Chaotun Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule (Hunan University of Science and Technology), Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical EngineeringHunan University of Science and Technology Xiangtan China
| | - Chenzhong Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule (Hunan University of Science and Technology), Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical EngineeringHunan University of Science and Technology Xiangtan China
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9
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Yuan H, Li MY, Chen CN, Zhang Y, Liu WQ. Substituent effects on the UV absorption energy of 2,5-disubstituted pyrimidines. J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3860] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hua Yuan
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, National Demonstration Center for Experimental Chemical Engineering and Materials, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province PR China
| | - Meng-Yang Li
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, National Demonstration Center for Experimental Chemical Engineering and Materials, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province PR China
| | - Chun-Ni Chen
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, National Demonstration Center for Experimental Chemical Engineering and Materials, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province PR China
| | - Yan Zhang
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, National Demonstration Center for Experimental Chemical Engineering and Materials, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province PR China
| | - Wan-Qiang Liu
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, National Demonstration Center for Experimental Chemical Engineering and Materials, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province PR China
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10
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Fang Z, Wu F, Jiao Y, Wang N, Au C, Cao C, Yi B. Effects of styrene unit on molecular conformation and spectral properties of CN PhCH NPhCH CHPh CN. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.01.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Li G, Chen Y, Qiao Y, Lu Y, Zhou G. Charge Transfer Switching in Donor–Acceptor Systems Based on BN-Fused Naphthalimides. J Org Chem 2018; 83:5577-5587. [DOI: 10.1021/acs.joc.8b00597] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Guangfeng Li
- Lab of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200438, P. R. China
| | - Yijing Chen
- Lab of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200438, P. R. China
| | - Yanjun Qiao
- Lab of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200438, P. R. China
| | - Yifan Lu
- Lab of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200438, P. R. China
| | - Gang Zhou
- Lab of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200438, P. R. China
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12
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Is there substituent cross-interaction effect in all the conjugated systems containing C N polar bond? The substituent effects on the NMR chemical shifts of 2,5-disubstituted pyrimidines. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.10.111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Cao CT, Wang LY, Cao CZ. Substituent Effects on 13C NMR and 1H NMR Chemical Shifts of CH=N in Multi-substituted Benzylideneanilines. CHINESE J CHEM PHYS 2018. [DOI: 10.1063/1674-0068/31/cjcp1704077] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Chao-tun Cao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Organic Chemistry and Function Molecule (Hunan University of Science and Technology), Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, Xiangtan 411201, China
| | - Lin-yan Wang
- School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Chen-zhong Cao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Organic Chemistry and Function Molecule (Hunan University of Science and Technology), Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, Xiangtan 411201, China
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14
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Wu F, Fang Z, Yi B, Au C, Cao C, Huang L, Xie X. Cross-interaction effects of substituents on N -benzylideneanilines conformation: A DFT investigation. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.03.057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Leela S, Deepa Rani T, Subashini A, Brindha S, Ramesh Babu R, Ramamurthi K. Studies on growth and characterization of nonlinear optical material 4-chloro-4′methoxy benzylideneaniline: A Schiff base organic material. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2014.06.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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16
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Cao CT, Zhou W, Cao C. Abnormal effect of hydroxyl on the longest wavelength maximum in ultraviolet absorption spectra for bis-aryl Schiff bases. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3672] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chao-Tun Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province China
| | - Wei Zhou
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province China
| | - Chenzhong Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province China
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17
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Cao CT, Bi Y, Cao C. Effects of single bond-ion and single bond-diradical form on the stretching vibration of C=N bridging bond in 4,4'-disubstituted benzylidene anilines. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 163:96-101. [PMID: 27043872 DOI: 10.1016/j.saa.2016.03.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 03/19/2016] [Accepted: 03/20/2016] [Indexed: 06/05/2023]
Abstract
Fifty-seven samples of model compounds, 4,4'-disubstituted benzylidene anilines, p-X-ArCH=NAr-p-Y were synthesized. Their infrared absorption spectra were recorded, and the stretching vibration frequencies νC=N of the C=N bridging bond were determined. New stretching vibration mode was proposed by means of the analysis of the factors affecting νC=N, that is there are mainly three modes in the stretching vibration of C=N bond: (I) polar double bond form C=N, (II) single bond-ion form C(+)-N(-) and (III) single bond-diradical form C-N. The contributions of the forms (I) and (II) to the change of νC=N can be quantified by using Hammett substituent constant (including substituent cross-interaction effects between X and Y groups), whereas the contribution of the form (III) can be quantified by employing the excited-state substituent constant. The most contribution of these three forms is the form (III), the next is the form (II), whose contribution difference was discussed with the viewpoint of energy requirements in vibration with the form (III) and form (II).
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Affiliation(s)
- Chao-Tun Cao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Hunan University of Science and Technology, Xiangtan 411201, China; Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, Xiangtan 411201, China
| | - Yakun Bi
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Hunan University of Science and Technology, Xiangtan 411201, China; Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, Xiangtan 411201, China
| | - Chenzhong Cao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Hunan University of Science and Technology, Xiangtan 411201, China; Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, Xiangtan 411201, China.
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18
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Wang LY, Cao CT, Cao CZ. Substituent Effects on Reduction Potentials of Meta-substituted and Para-substituted Benzylideneanilines. CHINESE J CHEM PHYS 2016. [DOI: 10.1063/1674-0068/29/cjcp1508173] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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19
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Fang Z, Wu F, Yi B, Cao C, Xie X. Effects of molecular conformation on the spectroscopic properties of 4,4′-disubstituted benzylideneanilines. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.09.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Yuan H, Cao CT, Cao Z, Chen CN, Cao C. The influence of the excited-state substituent effect on the reduction potentials of Schiff bases. J PHYS ORG CHEM 2015. [DOI: 10.1002/poc.3511] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hua Yuan
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Key Laboratory of QSAR/QSPR of Hunan Provincial University, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
| | - Chao-Tun Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Key Laboratory of QSAR/QSPR of Hunan Provincial University, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
| | - Zhongzhong Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Key Laboratory of QSAR/QSPR of Hunan Provincial University, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
| | - Chun-Ni Chen
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Key Laboratory of QSAR/QSPR of Hunan Provincial University, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
| | - Chenzhong Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Key Laboratory of QSAR/QSPR of Hunan Provincial University, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
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22
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Wang L, Cao C, Cao C. Comparison of the substituent effects on the (13) C NMR with the (1) H NMR chemical shifts of CH=N in substituted benzylideneanilines. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2015; 53:520-525. [PMID: 26031232 DOI: 10.1002/mrc.4248] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 02/01/2015] [Accepted: 03/19/2015] [Indexed: 06/04/2023]
Abstract
Fifty-two samples of substituted benzylideneanilines XPhCH=NPhYs (XBAYs) were synthesized, and their NMR spectra were determined in this paper. Together with the NMR data of other 77 samples of XBAYs quoted from literatures, the (1) H NMR chemical shifts (δH (CH=N)) and (13) C NMR chemical shifts (δC (CH=N)) of the CH=N bridging group were investigated for total of 129 samples of XBAYs. The result shows that the δH (CH=N) and δC (CH=N) have no distinctive linear relationship, which is contrary to the theoretical thought that declared the δH (CH=N) values would increase as the δC (CH=N) values increase. With the in-depth analysis, we found that the effects of σF and σR of X/Y group on the δH (CH=N) and the δC (CH=N) are opposite; the effects of the substituent specific cross-interaction effect between X and Y (Δσ(2) ) on the δH (CH=N) and the δC (CH=N) are different; the contributions of parameters in the regression equations of the δH (CH=N) and the δC (CH=N) [Eqns and 7), respectively] also have an obvious difference.
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Affiliation(s)
- Linyan Wang
- School of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Organic Chemistry and Function Molecule (Hunan University of Science and Technology), Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, Xiangtan, 411201, China
| | - Chaotun Cao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Organic Chemistry and Function Molecule (Hunan University of Science and Technology), Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, Xiangtan, 411201, China
| | - Chenzhong Cao
- School of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Organic Chemistry and Function Molecule (Hunan University of Science and Technology), Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, Xiangtan, 411201, China
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Cao Z, Cao C, Cao C. Comparison of the 13
C (C = N) chemical shifts of substituted N
-(phenyl-ethylene)-anilines and substituted N
-(benzylidene)-anilines. J PHYS ORG CHEM 2015. [DOI: 10.1002/poc.3450] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhongzhong Cao
- School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; Hunan University of Science and Technology; Xiangtan 411201 China
| | - Chaotun Cao
- School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; Hunan University of Science and Technology; Xiangtan 411201 China
| | - Chenzhong Cao
- School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; Hunan University of Science and Technology; Xiangtan 411201 China
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Chen G, Wu X, Cao C, Liu F, Zeng R, Liu W. A QSPR correlation on the 13C NMR chemical shifts of bridge carbons for different series of aromatic Schiff bases. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2015; 53:172-177. [PMID: 25345574 DOI: 10.1002/mrc.4148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 08/22/2014] [Accepted: 08/25/2014] [Indexed: 06/04/2023]
Affiliation(s)
- Guanfan Chen
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China; Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan University of Science and Technology, Xiangtan, China; Hunan Provincial University Key Laboratory of QSAR/QSPR, Hunan University of Science and Technology, Xiangtan, China
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de Melo CEA, Nandi LG, Domínguez M, Rezende MC, Machado VG. Solvatochromic behavior of dyes with dimethylamino electron-donor and nitro electron-acceptor groups in their molecular structure. J PHYS ORG CHEM 2014. [DOI: 10.1002/poc.3402] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Carlos E. A. de Melo
- Departamento de Química; Universidade Federal de Santa Catarina; UFSC Florianópolis SC Brazil
| | - Leandro G. Nandi
- Departamento de Química; Universidade Federal de Santa Catarina; UFSC Florianópolis SC Brazil
| | - Moisés Domínguez
- Facultad de Química y Biología; Universidad de Santiago; Av. B. O'Higgins Santiago Chile
| | - Marcos C. Rezende
- Facultad de Química y Biología; Universidad de Santiago; Av. B. O'Higgins Santiago Chile
| | - Vanderlei G. Machado
- Departamento de Química; Universidade Federal de Santa Catarina; UFSC Florianópolis SC Brazil
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Jiang Q, Wang JY, Guo C. Iodine(III)-Mediated C–H Alkoxylation of Aniline Derivatives with Alcohols under Metal-Free Conditions. J Org Chem 2014; 79:8768-73. [DOI: 10.1021/jo501601u] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Qing Jiang
- College of Chemistry and
Chemical Engineering, Advanced Catalytic Engineering Research Center
of the Ministry of Education, Hunan University, Changsha 410082, P.R. China
| | - Jing-Yu Wang
- College of Chemistry and
Chemical Engineering, Advanced Catalytic Engineering Research Center
of the Ministry of Education, Hunan University, Changsha 410082, P.R. China
| | - Cancheng Guo
- College of Chemistry and
Chemical Engineering, Advanced Catalytic Engineering Research Center
of the Ministry of Education, Hunan University, Changsha 410082, P.R. China
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Kim HR, Yoon JH, Kim MY, Um IH. Kinetic Study on Aminolysis of 2-Chloro-4-nitrophenyl X-Substituted-Benzoates in Acetonitrile and in H 2O Containing 20 mol % DMSO: Effects of Medium and Substituent X on Reactivity and Reaction Mechanism. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ha-Ram Kim
- Department of Science Education, Ewha Womans University
| | | | | | - Ik-Hwan Um
- Department of Chemistry, Ewha Womans University
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Lu X, Fan S, Wu J, Jia X, Wang ZS, Zhou G. Controlling the Charge Transfer in D–A–D Chromophores Based on Pyrazine Derivatives. J Org Chem 2014; 79:6480-9. [DOI: 10.1021/jo500856k] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Xuefeng Lu
- Lab of Advanced Materials & Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Suhua Fan
- Lab of Advanced Materials & Department of Chemistry, Fudan University, Shanghai 200438, China
- College of Chemistry & Chemical Engineering, Fuyang Normal College, Fuyang, Anhui 236037, China
| | - Jinhong Wu
- Lab of Advanced Materials & Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xiaowei Jia
- Lab of Advanced Materials & Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Zhong-Sheng Wang
- Lab of Advanced Materials & Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Gang Zhou
- Lab of Advanced Materials & Department of Chemistry, Fudan University, Shanghai 200438, China
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29
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Rančić M, Trišović N, Milčić M, Jovanović M, Jovanović B, Marinković A. Linear Free-Energy Relationships Applied to the13C NMR Chemical Shifts in 4-SubstitutedN-[1-(Pyridine-3- and -4-yl)ethylidene]anilines. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Milica Rančić
- Faculty of Forestry Science; University of Belgrade; Kneza Višeslava 1 11030 Belgrade Serbia
| | - Nemanja Trišović
- Faculty of Technology and Metallurgy; University of Belgrade; Post Office Box 3503, Karnegijeva 4 11120 Belgrade Serbia
| | - Miloš Milčić
- Faculty of Chemistry; University of Belgrade; Studentski trg 3-5 11000 Belgrade Serbia
| | - Maja Jovanović
- Faculty of Chemistry; University of Belgrade; Studentski trg 3-5 11000 Belgrade Serbia
| | - Bratislav Jovanović
- Institute for Chemistry, Technology and Metallurgy; University of Belgrade; Njegoševa 12 11000 Belgrade Serbia
| | - Aleksandar Marinković
- Faculty of Technology and Metallurgy; University of Belgrade; Post Office Box 3503, Karnegijeva 4 11120 Belgrade Serbia
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30
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Batema GD, Lutz M, Spek AL, van Walree CA, van Klink GPM, van Koten G. Organometallic benzylidene anilines: donor–acceptor features in NCN-pincer Pt(ii) complexes with a 4-(E)-[(4-R-phenyl)imino]methyl substituent. Dalton Trans 2014; 43:12200-9. [DOI: 10.1039/c4dt01023j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Inductively the Pt-moiety in these organometallic benzylidene anilines is a very strong electron-withdrawing group, but mesomerically a very strong electron-donating group.
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Affiliation(s)
- Guido D. Batema
- Organic Chemistry and Catalysis
- Faculty of Science
- Utrecht University
- 3584CG Utrecht, The Netherlands
| | - Martin Lutz
- Crystal and Structural Chemistry
- Faculty of Science
- Utrecht University
- 3584CH Utrecht, The Netherlands
| | - Anthony L. Spek
- Crystal and Structural Chemistry
- Faculty of Science
- Utrecht University
- 3584CH Utrecht, The Netherlands
| | - Cornelis A. van Walree
- Organic Chemistry and Catalysis
- Faculty of Science
- Utrecht University
- 3584CG Utrecht, The Netherlands
- School of Chemical and Physical Sciences
| | - Gerard P. M. van Klink
- Organic Chemistry and Catalysis
- Faculty of Science
- Utrecht University
- 3584CG Utrecht, The Netherlands
| | - Gerard van Koten
- Organic Chemistry and Catalysis
- Faculty of Science
- Utrecht University
- 3584CG Utrecht, The Netherlands
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31
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Fang Z, Cao C. Effect of molecular conformation on spectroscopic properties of symmetrical Schiff bases derived from 1,4-phenylenediamine. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.12.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Fang Z, Cao C, Chen G. Substituent effects on the 13
C NMR chemical shifts of the imine carbon in N
-(4-X-benzylidene)-4-(4-Y-styryl) anilines. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zhengjun Fang
- School of Chemistry and Chemical Engineering; Central South University; Changsha 410083 China
- School of Chemistry and Chemical Engineering; Hunan Institute of Engineering; Xiangtan 411104 China
| | - Chenzhong Cao
- School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education; Hunan University of Science and Technology; Xiangtan 411104 China
- Hunan Provincial University Key Laboratory of QSAR/QSPR; Xiangtan 411104 China
| | - Guanfan Chen
- School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education; Hunan University of Science and Technology; Xiangtan 411104 China
- Hunan Provincial University Key Laboratory of QSAR/QSPR; Xiangtan 411104 China
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33
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Fang Z, Cao C, Wu W, Wang L. Long-range transmission of substituent effects on 13
C NMR chemical shifts of imine carbon in benzylidene anilines. J PHYS ORG CHEM 2012. [DOI: 10.1002/poc.3077] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhengjun Fang
- School of Chemistry and Chemical Engineering; Central South University; Changsha 410083 China
- School of Chemistry and Chemical Engineering; Hunan Institute of Engineering; Xiangtan 411104 China
| | - Chenzhong Cao
- School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
- Hunan Provincial University Key Laboratory of QSAR/QSPR; Xiangtan 411201 China
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education; Hunan University of Science and Technology; Xiangtan 411201 China
| | - Weihe Wu
- School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
| | - Lu Wang
- School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 China
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34
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Chen G, Cao C, Zhu Y, Wu Z, Wu X. The alternating of substituent effect on the ¹³C NMR shifts of all bridge carbons in cinnamyl aniline derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 99:218-222. [PMID: 23078788 DOI: 10.1016/j.saa.2012.09.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Revised: 09/06/2012] [Accepted: 09/09/2012] [Indexed: 06/01/2023]
Abstract
Bridge carbon (13)C NMR shifts of a wide set of substituted cinnamyl anilines p-XC(6)H(4)CHCHCHNC(6)H(4)Y-p (XNO(2), Cl, H, Me, MeO, or NMe(2); YNO(2), CN, CO(2)Et, Cl, F, H, Me, MeO or NMe(2)) had been used as a probe to study the change of substituent effect in the conjugated system. The goal of this work was to study the difference among the substituent effect on SCS of all bridge carbons, and find the alternating of substituent effect in this model compounds. In this study, it was found that the change of the inductive effect and the conjugative effect on different bridge carbons is related to the bond number (m) from the substituent to the corresponding carbon, and the adjusted parameters σ(F(rel))(∗) and σ(R(ver))(∗) can be suitable to scale the difference of the inductive effect and the conjugative effect on bridge carbons. Moreover, because of the difference of substituent effect on bridge carbons, the substituent cross-interaction item Δσ(2)(Δσ(2) = (σ(F(rel))(∗)(X) + σ(R(ver))(∗)(X) - σ(F(rel))(∗)(Y) - σ(R(ver))(∗)(Y))(2)) was not suitable simply to scale the interaction between substituents X and Y for all bridge carbons, so the Δσ(2) was recommended to be divided into two parts: Δσ(F(rel))(2) (Δσ(F(rel))(2) = σ(F(rel))(∗)(X) - σ(F(rel))(∗)(Y))(2)) and Δσ(R(ver))(2) (Δσ(R(ver))(2) = (σ(R(ver))(∗)(X) - σ(R(ver))(∗)(Y))(2)). With σ(F(rel))(∗), σ(R(ver))(∗), Δσ(F(rel))(2), Δσ(R(ver))(2), and δ(C,parent), the obtained correlation equation can be used to correlate with the 159 sorts of SCS of the different bridge carbon in cinnamyl aniline derivatives. The correlation coefficient is 0.9993, and the standard deviation is only 0.53 ppm. The multi-parameter correlation equation can be recommended to predict well the corresponding bridge carbons SCS of disubstituted cinnamyl anilines.
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Affiliation(s)
- Guanfan Chen
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical, Chemistry and Molecular Simulation of Ministry of Education, Hunan Provincial University Key Laboratory of QSAR/QSPR, Xiangtan 411201, China
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35
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Armstrong PB, Dembicer EA, DesBois AJ, Fitzgerald JT, Gehrmann JK, Nelson NC, Noble AL, Bunt RC. Investigation of the Electronic Origin of Asymmetric Induction in Palladium-Catalyzed Allylic Substitutions with Phosphinooxazoline (PHOX) Ligands by Hammett and Swain–Lupton Analysis of the 13C NMR Chemical Shifts of the (π-Allyl)palladium Intermediates. Organometallics 2012. [DOI: 10.1021/om3007163] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul B. Armstrong
- Department of Chemistry & Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Elizabeth A. Dembicer
- Department of Chemistry & Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Andrew J. DesBois
- Department of Chemistry & Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Jay T. Fitzgerald
- Department of Chemistry & Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Janet K. Gehrmann
- Department of Chemistry & Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Nathaniel C. Nelson
- Department of Chemistry & Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Amelia L. Noble
- Department of Chemistry & Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Richard C. Bunt
- Department of Chemistry & Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
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36
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Zhu X, Wang S, Zhou S, Wei Y, Zhang L, Wang F, Feng Z, Guo L, Mu X. Lanthanide Amido Complexes Incorporating Amino-Coordinate-Lithium Bridged Bis(indolyl) Ligands: Synthesis, Characterization, and Catalysis for Hydrophosphonylation of Aldehydes and Aldimines. Inorg Chem 2012; 51:7134-43. [DOI: 10.1021/ic300137r] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Xiancui Zhu
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People’s Republic of China
| | - Shaowu Wang
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People’s Republic of China
- State Key Laboratory
of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai
200032, People’s Republic of China
| | - Shuangliu Zhou
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People’s Republic of China
| | - Yun Wei
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People’s Republic of China
| | - Lijun Zhang
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People’s Republic of China
| | - Fenhua Wang
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People’s Republic of China
| | - Zhijun Feng
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People’s Republic of China
| | | | - Xiaolong Mu
- Laboratory of Functionalized
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, Institute of Organic Chemistry, School of Chemistry and
Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People’s Republic of China
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37
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Fristrup P, Tursky M, Madsen R. Mechanistic investigation of the iridium-catalysed alkylation of amines with alcohols. Org Biomol Chem 2012; 10:2569-77. [PMID: 22349189 DOI: 10.1039/c2ob06603c] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The [Cp*IrCl(2)](2)-catalysed alkylation of amines with alcohols was investigated using a combination of experimental and theoretical methods. A Hammett study involving a series of para-substituted benzyl alcohols resulted in a line with a negative slope. This clearly documents that a positive charge is built up in the transition state, which in combination with the measurement of a significant kinetic isotope effect determines hydride abstraction as being the selectivity-determining step under these conditions. A complementary Hammett study using para-substituted anilines was also carried out. Again, a line with a negative slope was obtained suggesting that nucleophilic attack on the aldehyde is selectivity-determining. A computational investigation of the entire catalytic cycle with full-sized ligands and substrates was performed using density functional theory. The results suggest a catalytic cycle where the intermediate aldehyde stays coordinated to the iridium catalyst and reacts with the amine to give a hemiaminal which is also bound to the catalyst. Dehydration to the imine and reduction to the product amine also takes place without breaking the coordination to the catalyst. The fact that the entire catalytic cycle takes place with all the intermediates bound to the catalyst is important for the further development of this synthetic transformation.
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Affiliation(s)
- Peter Fristrup
- Department of Chemistry, Technical University of Denmark, Building 201, 2800 Kgs, Lyngby, Denmark.
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38
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Chen G, Cao C, Sheng B, Zhu Y, Wu Z, Wu X. Substituent effect study onδcvalues of the bridge group carbons in disubstituted cinnamyl aniline series. J PHYS ORG CHEM 2012. [DOI: 10.1002/poc.2923] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Guanfan Chen
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education; Hunan University of Science and Technology, Hunan Provincial University Key Laboratory of QSAR/QSPR; Xiangtan; 411201; China
| | - Chenzhong Cao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education; Hunan University of Science and Technology, Hunan Provincial University Key Laboratory of QSAR/QSPR; Xiangtan; 411201; China
| | - Bin Sheng
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education; Hunan University of Science and Technology, Hunan Provincial University Key Laboratory of QSAR/QSPR; Xiangtan; 411201; China
| | - Yun Zhu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education; Hunan University of Science and Technology, Hunan Provincial University Key Laboratory of QSAR/QSPR; Xiangtan; 411201; China
| | - Zhenxing Wu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education; Hunan University of Science and Technology, Hunan Provincial University Key Laboratory of QSAR/QSPR; Xiangtan; 411201; China
| | - Xiangsi Wu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education; Hunan University of Science and Technology, Hunan Provincial University Key Laboratory of QSAR/QSPR; Xiangtan; 411201; China
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39
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Collas A, Blockhuys F. (E)-4-[2-(3,4,5-trimethoxyphenyl)ethenyl]nitrobenzene and its 'bridge-flipped' analogues. Acta Crystallogr C 2011; 67:o364-9. [PMID: 21881188 DOI: 10.1107/s0108270111030952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 08/01/2011] [Indexed: 11/11/2022] Open
Abstract
The solid-state structures of three push-pull acceptor-π-donor (A-π-D) systems differing only in the nature of the π-spacer have been determined. (E)-1-Nitro-4-[2-(3,4,5-trimethoxyphenyl)ethenyl]benzene, C(17)H(17)NO(5), (I), and its 'bridge-flipped' imine analogues, (E)-3,4,5-trimethoxy-N-(4-nitrobenzylidene)aniline, C(16)H(16)N(2)O(5), (II), and (E)-4-nitro-N-(3,4,5-trimethoxybenzylidene)aniline, C(16)H(16)N(2)O(5), (III), display different kinds of supramolecular networks, viz. corrugated planes, a herringbone pattern and a layered structure, respectively, all with zero overall dipole moments. Only (III) crystallizes in a noncentrosymmetric space group (P2(1)2(1)2(1)) and is, therefore, a potential material for second-harmonic generation (SHG).
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Affiliation(s)
- Alain Collas
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
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40
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Affiliation(s)
- Rajeshwar P Verma
- Department of Chemistry, Pomona College, 645 North College Avenue, Claremont, California 91711, USA.
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41
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Murphy-Jolly MB, Owens SB, Freeman JL, Gray GM, Lawson CM, Shelton DP. Syntheses, Crystal Structures and Photophysical Measurements of Phosphite-Substituted Schiff Base and Azobenzene Ligands. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000557] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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42
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Zanardi A, Mata J, Peris E. One-Pot Preparation of Imines from Nitroarenes by a Tandem Process with an Ir-Pd Heterodimetallic Catalyst. Chemistry 2010; 16:10502-6. [DOI: 10.1002/chem.201000801] [Citation(s) in RCA: 117] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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43
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Cao C, Lu B, Chen G. Investigation of the substituent specific cross-interaction effects on 13
C NMR of the CN bridging group in substituted benzylidene anilines. J PHYS ORG CHEM 2010. [DOI: 10.1002/poc.1760] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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44
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He S, Tan Y, Xiao X, Zhu L, Guo Y, Li M, Tian A, Pu X, Wong NB. Substituent effects on electronic character of the CN group and trans/cis isomerization in the C-substituted imine derivatives: A computational study. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2010.03.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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45
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Al-Kahraman YM, Madkour HM, Ali D, Yasinzai M. Antileishmanial, antimicrobial and antifungal activities of some new aryl azomethines. Molecules 2010; 15:660-71. [PMID: 20335936 PMCID: PMC6256931 DOI: 10.3390/molecules15020660] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2009] [Revised: 12/28/2009] [Accepted: 01/08/2010] [Indexed: 12/02/2022] Open
Abstract
A series of eighteen azomethines has been synthesized by the reaction of appropriate primary aromatic amines with aryl and/or heteroaryl carboxaldehydes. The synthesized azomethines have been evaluated for their in vitro antileishmanial, antibacterial and antifungal activities. The results revealed some antifungal activity of most of the synthesized compounds, whereas the antileishmaniasis activity results highlighted that all synthesized azomethines inhibited parasite growth and most of them showed highly potent action towards Leishmania major promastigotes. No remarkable bactericidal activities were observed.
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Affiliation(s)
| | - Hassan. M.F. Madkour
- Institute of Biochemistry, University of Balochistan, Quetta, Pakistan
- Synthetic Organic Chemistry Lab., Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Dildar Ali
- Institute of Biochemistry, University of Balochistan, Quetta, Pakistan
| | - Masoom Yasinzai
- Institute of Biochemistry, University of Balochistan, Quetta, Pakistan
- Author to whom correspondence should be addressed; E-Mail: .
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46
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Neuvonen H, Fülöp F, Neuvonen K, Koch A, Kleinpeter E. Electronic effects of heterocyclic ring systems as evaluated with the aid of13C and15N NMR chemical shifts and NBO analysis. J PHYS ORG CHEM 2008. [DOI: 10.1002/poc.1271] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Neuvonen H, Neuvonen K, Koch A, Kleinpeter E. DFT study of the substituent cross-interaction effects on the conformation of substituted N-benzylideneanilines – Models of liquid crystal forming compounds: Use of 13C NMR chemical shift of the CN Carbon as a tool to predict the conformation of the molecule. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2007.03.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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