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2521“…In the presence of one or two conjugated electron donating or accepting substituents capable of hindered rotation, the calculated dipole moments reproduce the experimental results equally well only in the cases when the experiments were done at the temperatures at which rotation of substituents remains hindered. …”
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2522por Wu, Yuhao, Su, Xianlong, Xie, Chaoyi, Hu, Rongrong, Li, Xianghong, Zhao, Qiang, Zheng, Guoli, Yan, Junkun“…With different electron-donating groups linked to vinyl, these complexes exhibited regular changes in MLCT absorption bands, which were identified by UV-Vis and CV spectra in combination with DFT and TD-DFT. …”
Publicado 2021
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2523por Liu, Yanfei, Long, Shuo, Zhang, Shanshan, Tan, Yifu, Wang, Ting, Wu, Yuwei, Jiang, Ting, Liu, Xiaoqin, Peng, Dongming, Liu, Zhenbao“…Compounds 8p, 8c, 8d, 8i, 8j, 8l, and especially 8p showed significantly higher antioxidant activities, which could be attributed to the electronic donating groups. All the berberine derivatives possessed proper lipophilicities. …”
Publicado 2021
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2524por Chakraborty, Subrata, Tsai, Ming-Chi, Su, Xin-De, Chen, Xuan-Cheng, Su, Tang-Ting, Tsao, Che-Kai, Lin, Ching-Yao“…We herein report the synthesis, properties, and photovoltaic performance of three new air-stable, meso-substituted bacteriochlorins bearing a dioctylfluorenylethyne (denoted as LS-17), a dioctylaminophenylethynylanthrylethyne (LS-43), and a diarylaminoanthrylethyne (LS-45) as the electron-donating groups. Among these LS-bacteriochlorins, LS-17 displays sharp UV-visible absorption bands whereas LS-43 and LS-45 give rise to broadened and red-shifted absorptions. …”
Publicado 2020
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2525por Köckinger, Manuel, Hanselmann, Paul, Hu, Guixian, Hone, Christopher A., Kappe, C. Oliver“…Good to excellent yields of aryl aldehydes were obtained within 45 min for substrates containing electron withdrawing substituents, and 2 h for substrates containing electron donating substituents. The optimal reaction conditions were identified as 120 °C temperature and 20 bar pressure in dimethyl sulfoxide (DMSO) as solvent. …”
Publicado 2020
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2526“…Proposed reaction mechanisms explain how the Co–C bond energy of the CO(2)–cobalt salen complex can be tuned by appropriate substitutions of electron donating or withdrawing groups on the phenyl ring.…”
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2527“…Finally, computational calculations show a great correlation with the experimental results due to the electron-donating effect.…”
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2528“…Characterization results suggested that the prepared materials featured hierarchically porous structures, high pore volumes, tunable surface wettability and strong electron-donating ability towards palladium species. We demonstrated the use of these solid catalysts for water-mediated Suzuki–Miyaura coupling reactions. …”
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2529“…Different functional groups bearing electron-donating as well as withdrawing groups are also tolerant to the reaction conditions.…”
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2530por Torres-Moya, Iván, Arrechea-Marcos, Iratxe, Tardío, Carlos, Carrillo, José R., Díaz-Ortiz, Ángel, López Navarrete, J. Teodomiro, Ruiz Delgado, M. Carmen, Prieto, Pilar, Ortiz, Rocío Ponce“…The results indicate that the planarity of the structure and the good intramolecular charge transfer from the electron-donating to the electron-withdrawing fragments play a critical role in the application of the compounds as semiconductors in OFET devices. …”
Publicado 2018
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2531“…A significant shallowing of the highest occupied molecular orbital level is observed in accordance with the electron-donating nature of the side units (benzene, thiophene, and thienothiophene). …”
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2532por Li, Dingzhong, Zhang, Wensheng, Zhu, Longzhi, Yin, Shuang‐Feng, Kambe, Nobuaki, Qiu, Renhua“…Similarly, hydrogenations of p‐nitro‐aryl fluorides containing electron‐donating groups also smoothly proceeded under mild conditions. …”
Publicado 2022
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2533por Pan, Yating, Wang, Jingxue, Chen, Shengyi, Yang, Weijie, Ding, Chunmei, Waseem, Amir, Jiang, Hai-Long“…Dynamic and thermodynamic investigations indicate that the production and lifetime of the Ti(3+) intermediate are the key factors, due to the electron-donating/-withdrawing effect of the functional groups. …”
Publicado 2022
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2534“…In both cases, the target compounds were obtained in various combinations, by introducing electron-donating or electron-withdrawing substituents into the terminal rings, together with aromatic or aliphatic substituents on the triazole nitrogen atom. …”
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2535por Fostvedt, Jade I., Mendoza, Jocelyne, Lopez-Flores, Sacy, Alcantar, Diego, Bergman, Robert G., Arnold, John“…In this Perspective, we discuss the strategy of π-loading, i.e., coordination of two or more strongly π-donating ligands to a single metal center, as it applies to promoting reactivity at group 5 transition metal-imido groups. …”
Publicado 2022
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2536por Ruiz‐Zambrana, César, Dubey, Rajeev K., Poyatos, Macarena, Mateo‐Alonso, Aurelio, Peris, Eduardo“…The reduction of the ligand produces a significant increase on its electron‐donating character, as observed from the infrared spectroelectrochemical studies. …”
Publicado 2022
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2537“…It is concluded that the effect of ligands on their catalytic performance might be related to their electron-donating or -withdrawing properties.…”
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2538“…Nevertheless, it can be argued that the number of electron-donating substituents (-OH and -OCH3) and their configuration has a significant impact on the antioxidant capacity. …”
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2539por Li, Li, Lin, Zhenmei, Lu, Xicun, Chen, Chen, Xie, Anqi, Tang, Yaoping, Zhang, Ziqian“…An ideal NO donor should possess controllable and visible NO-release capability. The reported NO donating nanoparticles, prepared via encapsulating a hydrophobic NO-releasing compound into DSPE-PEG(2000), meet the criteria mentioned previously. …”
Publicado 2022
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2540por Huang, Tianhao, Jiang, Chengzi, Xu, Tianning, Ying, Jinhui, Lu, Ran, Zhou, Huipeng“…Fluorene–ethylene units serving as π-spacers could weaken the role of electron-donating units and effectively enhance the TPA performance of oligomers. …”
Publicado 2023
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