Beiträge zur Chemie des Phosphors, 228 [1] Funktionalisierte Diphosphane als Synthesebausteine: LiH(t-BuP)₂, Li₂(t-BuP)₂, K₂(i-PrP)₂, (i-PrP)₂Cl₂ / Contributions to the Chemistry of Phosphorus, 228 [1] Functionalized Diphosphanes as Synthetic Building Blocks: LiH(t-BuP)₂, Li₂(t-BuP)₂, K₂(i-PrP)₂, (i-PrP)₂Cl₂

Abstract

1-Lithiurn-2-hydrogen-1,2-di-tert-butyldiphosphide (1) and 1,2-dilithium-1,2-di-tert-butyldiphosphide (2) have been synthesized by the metalation of 1,2-di-tert-butyldiphosphane with H-butyllithium. 1,2-Dipotassium-1,2-diisopropyldiphosphide (3) and 1,2-dichloro-1,2-diisopropyldiphosphane (4) were obtained by the degradation of a mixture of isopropylcyclophosphanes (i-PrP)3,4 by potassium and phosphorus(V) chloride, respectively. The compounds 1-4 are easily accessible starting materials for the synthesis of open-chain and cyclic terf-butylor isopropylphosphanes. The 31P NMR parameters of 1 -4 as well as of the triphosphide K2(i-PrP)3 and the tetraphosphide K2(i-PrP)4 are reported

Syntheses and Molecular Structures of Novel Alkali Metal Tetraorganylcyclopentaphosphanides and Tetraorganyltetraphosphane‐1,4‐diides

“…iPr Ph tBu [8] δ A Ϫ126.5(1) Ϫ105.6(1) Ϫ105.6(1) [19] and Na 2 (P 2 iPr 2 ) [20] (for 1) or Na 2 (P 4 Ph 4 ) (3), [11] Na{PPhP(H)Ph}, [20] Na 2 (P 3 Ph 3 ), [11] and Na 2 (P 2 Ph 2 ) [20] (for 2) were observed in the 31 P NMR spectra of the reaction mixtures. Compounds 1 and 2 are very air-sensitive, and even pyrophoric as finely divided powders.…”