Electron paramagnetic resonance investigation of the complexes of grignard reagents with 9,10-phenanthrenesemiquinonate |
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| Authors: | Kai Pan Kung-Lung Cheng Tong-Ing Ho |
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| Institution: | 1. Department of General Education, National Taipei College of Nursing, Taipei, 112, Taiwan;2. Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan |
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| Abstract: | The substituent effect on the proton hyperfine splitting constants (hfsc) of the charge-transfer complexes of Grignard reagents (RMgBr, R = CH3, C2H5, CH3CHCH) with seven 3-substituted 9,10-phenanthroquinones is reported. A back-donation bonding interaction between phenanthrenesemiquinonate anion radical π* and the magnesium p orbital is revealed by the hfsc analysis. |
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| Keywords: | EPR Grignard reagent phenanthroquinone |
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