Beiträge zur Chemie des Phosphors. 230. Hexaisopropyl-tetradecaphosphan(6), P14i-Pr6, und Hexaisopropyl-hexadecaphosphan(6), P16i-Pr6 — Bildung und 31P-NMR-spektroskopische Strukturbestimmung

Contributions to the Chemistry of Phosphorus. 230. Hexaisopropyltetradecaphosphane(6), P₁₄i-Pr₆, and Hexaisopropylhexadecaphosphane(6), P₁₆i-Pr₆ — Formation and Structural Determination by ³¹P-NMR Spectroscopy Hexaisopropyltetradecaphosphane(6) ( 1 ) and hexaiso-propylhexadecaphosphane(6) ( 2 ) are formed together with other isopropylpolycyclophosphanes by the reaction of i-PrPCl₂ with P₄ and magnesium and have been enriched to 30 mol% and 10 mol%, respectively. According to ³¹P-NMR spectroscopic investigations, the novel conjuncto-phosphane skeletons of 1 and 2 are the annelation products of a P₅ ring with a P₁₁(5) or a P₁₃(5) partial skeleton, respectively, joined by a common P₂ bridge. Thus, 1 is 4,5,6,10,12,14-hexaisopropylpentacyclo-9.2.1.0^2,9 .0^3,7 .0^8,13]tetradecaphosphane and 2 is 5,6,7,11,14,15-hexaisopropylhexacyclo7.7.0.0^2,13 .0^3,10 .0^4,8 .0^12,16]hexadecaphosphane. The phosphorus hydrides P₁₄H₁₆ and P₁₆H₆ have the same skeletal structures which are also intermediate stages in the formation of Hittorf's phosphorus.