Abstract
Alkali metal iodides dissolve in diisopropyl methylphosphonate (DIMP) and react at elevated temperatures (70–120°C) to yield isopropoxy methylphosphonato (IMP) M 1 (M=Li, Na, K) complexes and a mixture of isopropyl iodide, HI and propene. Li(IMP) was isolated in crystalline form. This complex redissolves in the reaction mixture at 125°C, while the Na 1 and K 1 analogs are soluble in the reaction mixture and were not obtained in crystalline form. Solutions of M(IMP) in the reaction mixture yield metal hydrogen methylphosphonate (M(MPH)), possibly through reaction with HI. M(MPH) is subsequently condensed to the corresponding metal pyromethylphosphonate (M 2- (PMP); M=Li, Na, K), which is precipitated in crystalline form. Li(IMP) and the M 2(PMP) complexes were characterized by means of infrared and conductance studies. Possible structures for these compounds are discussed.
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