GEM-DIBASIC LIGANDS WITH PHOSPHORUS SULFUR AND NITROGEN SITES AND SOME BORANE DERIVATIVES

Three gem-dibasic ligands, dimethylphosphinomethyldimethylamine [(CH3)2PCH2N(CH3)2] (pcn), dimethylphosphinomethyl methyl sulfide [(CH3)2PCH2SCH3] (pcs), and dimethylaminomethyl methyl sulfide [(CH3)2NCH2SCH3] (ncs) were prepared using chloromethyldimethylamine or chloromethyl methyl sulfide as starting materials. All three are colorless liquids of low vapor pressure (5-10 mm at room temperature), pen and pcs being very inflammable in air. Monoborane adducts, H3Bpcn, H3Bpcs, and H3Bncs, form readily with diborane. The only stable diadduct was H3BpcnBH3. A new borane cation type was demonstrated in the preparation of CH3pcnBH+3. © 1969, American Chemical Society. All rights reserved.