When a chloroform solution of S
2Cl
2 was brought into contact with acetone, vigorous reaction was observed to give a new type of polymer, which showed mp. 56-57°C, sulfur content 60.75%, 1710cm
-1, 1360cm
-1, 500cm
-1, 480cm
-1 in infrared spectrum, 1.62ppm (CH
3, group) 2.60, 2.73ppm (CH
2, group) in NMR spectrum, in CDCl
3 solution. Its structure was suggested as-(Sx-C (CH
3)
2-O-)-(Sx-CH
2-CO-CH
2)-(Sx'-CH
2-CO-CH
2). Molecular weight of this polymer determined by vapour pressure osmometer in chloroform solution was 2360.
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