tris(trimethylsilylseleno)phosphan 生成 Trimethyl(2,3,5,7-tetraselena-1,4,6-triphosphabicyclo[2.2.1]heptan-6-ylselanyl)silane 、 Selanylidene-tris(trimethylsilylselanyl)-lambda5-phosphane 、 Trimethyl-[(6-trimethylsilylselanyl-2,5,7-triselena-1,3,4,6-tetraphosphabicyclo[2.2.1]heptan-3-yl)selanyl]silane