Spiro[4.4]nonatetraene and its Positive and Negative Radical Ions: Molectronic Structure Investigations

Studies on the polymerization of ethylen

Studies on the polymerization of ethylene using a high-yield MgCl2-supported titanium catalyst, 4. Structural investigation by X-ray diffraction and electron spin resonance measurements on the state of titanium ions in the standard system and its modifications

✍ Hans Fuhrmann; Werner Herrmann 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 702 KB

## Abstract The MgCl~2~‐supported titanium catalyst MTK~ST~ was characterized by X‐ray diffraction measurement and electron spin resonance (ESR) spectroscopy. To obtain a better understanding of the nature of active sites the process of catalyst formation was interrupted at several stages to obtain