Interaction of Polystyryl Radical with Tris Azido-Iron(III) Complex |
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| Authors: | S D Baruah N N Dass |
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| Institution: | Department of Chemistry , Dibrugarh University , Dibrugarh , 786 004 , Assam , India |
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| Abstract: | The polymerization of styrene initiated by 2,2′-azobisisobutyro-nitrile (AIBN) had been studied in N, N-dimethylformamide (DMF) at 60°C in presence of tris azido-iron(III) complex. The complex was prepared in situ by mixing solid sodium azide with hexakis(N, N-dimethylformamide)iron(m) perchlorate, Fe(DMF)6] (ClO4)3, in the ratio 3:1. The nature of the complex formed was established by Job's method. The equilibrium constant for Fe3+ + 3N3 ? ? Fe(N3)3 determined by the limiting logarithmic method is 6.14 ± 106 liter3/mole3. The velocity constant for the polystyryl radical towards the complex is 3.13 ± 104 liter/mole-sec. |
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| Keywords: | neodymium diene polymerization ziegler catalysis polybutadiene rubber solvents |
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