A new series of Cu II coordination polymers derived from bis-pyridyl-bis-urea ligands and various dicarboxylates and their role in methanolysis of epoxide ring-opening catalysis
(2012) Crystal Growth & Design — Vol. 12, n° 11, p. 5546-5554 (2012)
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- Abstract
- A crystal engineering approach has been adopted in synthesizing six new mixed ligand based Cu <sup>II</sup> coordination polymers (CPs) derived from two bis-pyridyl-bis-urea ligands, namely, N,N′-bis-(3-pyridyl)ethylene-bis- urea (L1) and N,N′-bis-(3-pyridyl)propylene-bis-urea (L2), and various dicarboxylates. The single crystal structures of the coordination polymers displayed diverse supramolecular architectures such as a one-dimensional (1D) chain, 1D-looped chain, and two-dimensional grid. Although none of them displayed an open-framework structure, which is believed to be conducive for heterogeneous catalysis, almost all of them showed moderate to excellent epoxide ring-opening catalysis. Powder X-ray diffraction indicated structural changes/degradation of the CPs, which might be generating substrate accessible Cu <sup>II</sup> species that presumably acted as the catalyst. © 2012 American Chemical Society.
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Banerjee, S., Kumar, D. P., Bandyopadhay, S., Nayarassery Narayanan, A., & Dastidar, P. (2012). A new series of Cu II coordination polymers derived from bis-pyridyl-bis-urea ligands and various dicarboxylates and their role in methanolysis of epoxide ring-opening catalysis. Crystal Growth & Design, 12(11), 5546-5554. https://doi.org/10.1021/cg3011037 (Original work published 2012)