Polymerization of Diphenylcarbodiimide Catalysed by Fullerene-60

Abstract

In the presence of fullerene-60 as a catalyst, the formation of diphenylcarbodiimide (DPCD) from phenylisocyanate followed by its polymerization into a hexamer in xylene at refluxing temperature was carried out. The product was analysed by FAB-Mass spectrometry, FT-IR, UV-Vis and HPLC techniques.

Notes

Representative data for 4: ¹³C NMR (JEOL GSX 400 MHz, DMSO-d₆ + CDC1₃) δ 152.766, 149.153, 139.955, 134.991, 129.147, 129.071, 128.965, 128.495, 121.952 and 118.340 ppm.; ¹H NMR (JEOL GSX 400 MHz DMSO-d₆+CDCl₃) δ 7.437 (q).; FT-IR (KBr) cm⁻¹ : 3327.5(m), 3061.7(w), 2924(w), 2853.4(w), 2138.9(w), 1711(vs), 1650.2(s), 1593.8(s), 1554.7(s), 1494.9(s), 1415.5(s), 1314.1(m), 1209.9(s), 1072.9(w), 1027(w), 895.8(w), 827.4(w), 755(s), 694(s), 690(m), 529.2(w) and 510.4(w).; UV-Vis λ _max (CH₂C1₂) 284.5 nm.; Anal. (C₁₃N₂H₁₀)₆ C, H, N: Calcd, 80.39.; found, 73.58: calcd, 5.19.; found, 5.30.; Calcd, 14.42.; found, 11.85.