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Catalytic transesterifications by a Zn-bissalen mof containing open pyridyl groups inside 1D channels

Title
Catalytic transesterifications by a Zn-bissalen mof containing open pyridyl groups inside 1D channels
Authors
Kim W.-S.Lee K.Y.Ryu E.-H.Gu J.-M.Kim Y.Lee S.J.Huh S.
Ewha Authors
김영미
SCOPUS Author ID
김영미scopus
Issue Date
2013
Journal Title
European Journal of Inorganic Chemistry
ISSN
1434-1948JCR Link
Citation
no. 24, pp. 4228 - 4233
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The new ligand N,N′,N″,N″′-tetrakis[3-tert-butyl-5- (4-pyridinyl)salicylidene]-1,2,4,5-benzenetetraamine (bisSalen) containing four pyridyl groups in its periphery was prepared and subsequently used as an organic linker for a Zn-bisSalen MOF. A 2D undulated sheet structure was determined from single-crystal X-ray diffraction studies. The bisSalen ligands bridge two ZnII ions, and one of the pyridyl groups on each side of the bisSalen ligand further coordinates to a bisSalen-coordinated ZnII ion to provide a 2D sheet structure. The undulated 2D sheets are stacked closely together to form a 3D-like structure containing well-defined 1D channels, the orientation of which is perpendicular to the 2D sheets. The geometry of the bisSalen in the MOF is not planar. The remaining uncoordinated pyridyl groups point toward the 1D channels. Because of these openly accessible pyridyl groups in the channels, the Zn-bisSalen MOF is a very active catalyst for transesterifications. A 3D-like 2D Zn-bisSalen MOF {bisSalen = N,N′,N″,N″′-tetrakis[3-tert-butyl-5-(4-pyridinyl) salicylidene]-1,2,4,5-benzenetetraamine} with a large void space and Lewis-basic openly accessible pyridyl groups inside 1D channels was prepared and structurally investigated. The solvent-free Zn-bisSalen MOF contains a solvent-accessible void volume of 41.1 %. The as-prepared Zn-bisSalen MOF effectively catalyzes transesterifications. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
DOI
10.1002/ejic.201300208
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자연과학대학 > 화학·나노과학전공 > Journal papers
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