Porphyrin Clathrates. Crystal Structures of Two Unexpected Products Obtained by Solvothermal Reactions of Pt-tetra(4-carboxyphenyl)porphyrin with Copper Acetate |
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Authors: | Michaela Shmilovits Mikki Vinodu Israel Goldberg |
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Affiliation: | (1) Department of Chemistry, Faculty of Arts and Sciences, University of Dicle, 21280 Diyarbak Õr, Turkey;(2) Department of Engineering Physics, Faculty of Engineering, Hacettepe University, 06532 Beytepe, Ankara, Turkey |
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Abstract: | The X-ray crystal structure of IX, perchlorate salt of R-(–-2-ethyl-N-benzyl-4,7,19,13-tetraoxa-8,9-benzo-1-azacyclopentadec-8-ene has been determined. In the molecule, the protonated nitrogen atom participates in two N-H O hydrogen bonds. The unusually high proton affinity of aza crown ether leads to the formation of diastreomer instead of complex formation with chiral R-(+)-1-phenyl ethyl ammonium perchlorate and S-(–)-1-phenyl ethyl ammonium perchlorate. The complex ability of host ethers was evaluated in terms of structural modification. |
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Keywords: | chiral crown ether crystal structure molecular recognition |
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