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N-(4-Heptyl)propargylamine is a compound that is used in the synthesis of the polymer polypropylene. It has been shown to be an effective catalyst for the polymerization of propylene and ethylene, which is catalyzed by a transition metal. This process can produce high molecular weight polymers with low levels of impurities. N-(4-Heptyl)propargylamine has been shown to have thermal expansion properties, which are due to its ability to form lamellar phases at low temperatures. This compound also has a phase transition temperature at -5 °C, and it undergoes a ferroelectric phase transition at -78 °C. N-(4-Heptyl)propargylamine also shows low energy activation, which is due to its ability to undergo structural changes between phases without large amounts of energy being released as heat.
