Cyclodimers versus cyclotrimers via solvent or temperature effects on metallacyclization |
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Authors: | Kang Hyun Ji Noh Tae Hwan Jin Jong Sung Jung Ok-Sang |
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Institution: | Department of Chemistry, Pusan National University, Pusan 609-735, Korea. |
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Abstract: | The reaction of (COD)PdCl 2 (COD = 1,5-cyclooctadiene) with bis(3-pyridyl)methylphenylsilane (L) in acetone affords single crystals consisting of cyclodimers, PdCl 2(L)] 2, whereas the reaction in a mixture of dichloromethane and ethanol yields amorphous spheres consisting of cyclotrimers, PdCl 2(L)] 3. The interconversion and morphology control between the crystals and the microspheres can be explained by the difference in flexibility between the cyclodimer and cyclotrimer. |
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