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| Type |
Poster Presentation |
| Area |
무기화학 |
| Room No. |
포스터발표장 |
| Time |
4월 21일 (금요일) 13:00~14:30 |
| Code |
INOR.P-78 |
| Subject |
Constructions and Catalytic Properties of Enantiomeric Two-fold 3D Zinc(II) Coordination Networks |
| Authors |
이해리, 정옥상*
부산대학교 화학과, Korea
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| Abstract |
Self-assembly of Zn(ClO4)2 with 1,1,2,2-tetramethyl-1,2-di(pyridin-3-yl)disilane (L) as a bidentate N-donor gives rise to 3D coordination networks, [Zn(μ-OH)(L)]3(ClO4)3∙5H2O, of unique, 103-a srs net topology. An important feature is that two enantiomeric 3D frameworks, 41- and 43-[Zn(μ-OH)(L)]3(ClO4)3∙5H2O, are interpenetrated to form a racemic two-fold 3D network with cages occupied by two water molecules. Another structural characteristic is a C3-symmetric planar Zn3(μ-OH)3 6-membered ring with tetrahedral Zn(II) ions. The steric hindrance of substrates and trace water effects on transesterification catalysis using the network has been scrutinized. For the reaction system, solvate water molecules within the cages of the interpenetrated 3D frameworks do not decrease the transesterification activity, whereas the trace water molecules in the substrate alcohols act as obvious obstacles to the reaction. The significantly different effects between the water molecules inside and outside of the oval-shaped cage represent an important conceptual advance in the development of such a catalytic system. More systematic studies, for example on the synthesis of related ligands, are in progress. Further investigation of this series of coordination frameworks, including a new topology based on the N-donor tridentate ligand, also is underway.
Reference
[1] Choi, E.; Ryu, M.; Lee, H.; Jung, O.-S. Dalton Trans. 2017, submitted |
| E-mail |
haeril@pusan.ac.kr |
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119th General Meeting of the KCS