Synthesis and Structural Chemistry of a Ternary Calixarene Lattice Inclusion System
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A ternary calixarene lattice inclusion system 3 has been synthesized, characterized and its crystal structure was determined by single crystal X-ray diffraction study. 3 is orthorhombic, space group Pbca with a = 21.236(3) Å, b = 12.2820(16) Å, c = 25.795(3) Å, α = 90°, β = 90°, γ = 90° and Z = 4. Analyses of single crystals of arene 3 crystallized from DMSO revealed the existence of a ternary system of 3 with DMSO and H2O. Compound 3 exists in eclipsed form rather than the staggered form. Different types of host–host, host–guest and guest–guest interactions were observed and analysed.
KeywordsAcid-catalyzed Host–guest chemistry Supramolecular chemistry Eclipsed isomer Staggered isomer X-ray crystal structure
The author would like to thank Mutah University for the support needed for this research, the Agency for Science, Technology and Research (A*STAR, Singapore) for the financial support, Prof. Koh Lip Lin and Ms Tan Geok Kheng from the National University of Singapore for their technical support and assistance. Special thanks are due to Dr. Zaher Juddeh (Nanyang Technological University, Singapore) for technical support and assistant in running some of the experiments needed to characterise the synthesised compound.
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