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Thinking Factory: here is is an example of a P6 English Composition on the theme of An Unwelcomed Guest from one of our student. Check our website for more examples.
Here is an example of an English composition about an unwelcomed guest for Primary 5 students in Singapore. Check our website for more free resources.
Oct 5, 2016 · The characteristics of host–guest systems, such as molecular recognition, complexation, encapsulation, guest composition, and dynamic exchange, are manifested by changes in the chemical shifts (Δω) in the NMR spectrum.
- Introduction
- Results and Discussion
- Acknowledgements
Considering these aspects, we recently began investigating their solid-state supramolecular chemistry and reported the first structural authentication of carboxylic acid substituted pillararene (CPA5), its basic self-assembly properties and formation of a host–guest complex with active pharmaceutical ingredient tetracaine.8 Our current work is focu...
While the shape of the CPA5 macrocyclic core resembles a regular pentagon, the closer look reveals some deviation from regular Euclidean geometry. For a regular pentagon, the interior angles are 108°, while the sp3 hybridization of the bridging methylene groups in pillararene would favor the bonding angle of 109.28°. The structural strain within th...
T. Ogoshi, M. Hashizume, T. Yamagishi and Y. Nakamoto, Chem. Commun., 2010, 46, 3708 RSC.T. Xiao, W. Zhong, L. Xu, X. Q. Sun, X. Y. Hu and L. Wang, Org. Biomol. Chem., 2019, 17, 1336 RSC; N. Song, T. Kakuta, T. Yamagishi, Y.-W. Yang and T. Ogoshi, Chem, 2018, 4, 2029 Search PubMed; P....X. Y. Hu, K. Jia, Y. Cao, Y. Li, S. Qin, F. Zhou, C. Lin, D. Zhang and L. Wang, Chem. – Eur. J., 2015, 21, 1208 CrossRef CAS; X. Wu, Y. Li, C. Lin, X. Y. Hu and L. Wang, Chem. Commun., 2015, 51, 68...G. Sun, Z. He, M. Hao, M. Zuo, Z. Xu, X. Y. Hu, J. J. Zhu and L. Wang, J. Mater. Chem. B, 2019, 7, 3944 RSC; G. Sun, Z. He, M. Hao, Z. Xu, X.-Y. Hu, J.-J. Zhu and L. Wang, Chem. Commun., 2019, 55,...- Helena Butkiewicz, Sandra Kosiorek, Volodymyr Sashuk, Oksana Danylyuk
- 2021
Host–guest complexes can be seen to arise from the coordination of a cationic, anionic, or neutral guest entity within a discrete host molecule or supramolecular host assembly, using noncovalent interactions, such as H-bonds, ionic bonds, van der Waals forces, and hydrophobic interactions.
Jan 19, 2021 · We demonstrate that the CH 4 –CO 2 guest composition impacts the guest–host interactions in hydrates during static temperature measurements at 10 K, implying that these interactions are ...
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Aug 7, 2018 · Radial distribution functions and three-dimensional density distributions provide insight into the changes in guest orientation and interactions with the host framework as a function of guest composition.
