Beiträge zur Chemie des Phosphors. 144. Synthese und Eigenschaften des Hexaphospha-3-germaspiro[2.4]heptans (t-BuP)2Ge(t-BuP)4

Contributions to the Chemistry of Phosphorus. 144. Synthesis and Properties of the Hexaphospha-3-germaspiro2.4]heptane (t-BuP)₂Ge(t-BuP)₄ The cyclocondensation of K(t-Bu)P? P(t-Bu)K with germanium tetrachloride in the molar ratio of 2:1 yields the novel spirocyclic compound 1,2,4,5,6,7-hexa-tert-butyl-1,2,4,5,6,7-hexaphospha-3-germaspiro2.4]heptane, (t-BuP)₂Ge(t-BuP)₄ ( 1 ). Besides considerable amounts of (t-BuP)₄ are formed and occasionally some (t-BuP)₃ can be found. 1 could be isolated in the pure state and has been NMR-spectroscopically characterized as a spirocyclic compound with a P₂GeP₄ skeleton.