ted with a halogen atom; a fluorine-containing organosulfur compound represented by the formula (I) wherein R2 is a methyl group; a fluorine-containing organosulfur compound represented by the formula (I) wherein R2 is a C2-C4 alkenyl group which is optionally substituted with a halogen atom; a fluorine-containing organosulfur compound represented by the formula (I) wherein R2 is a C2-C4 alkynyl g