1,2-diethyl-1,2-dimethyldiphosphane 1,2-disulfide InChI=1/C6H16P2S2/c1-5-7(3,9)8(4,10)6-2/h5-6H2,1-4H diphosphorane, 1,2-diethyl-1,2-dimethyl-, 1,2-disulfide