Diphosphapodanden,[12]-,[15]- und[18]Diphosphacoronanden, Diphosphacryptand-8 und Alkalimetall-Komplexe
作者:Gottfried Märkl、Josef Reisinger、Peter Kreitmeier、Jens Langer、H. Nöth
DOI:10.1002/1522-2675(200206)85:6<1714::aid-hlca1714>3.0.co;2-8
日期:2002.6
with benzaldehyde, the 7,16-dioxido〈P[O2]3P-cryptand-8〉 12 is obtained as the first diphosphacryptand. The FD-MS (CH2Cl2) of the cyclic bis-phosphine dioxides 10–12 show that they exist as [2M+Na]+ complexes. The complex formation constants Ka of 9–11 with alkali-metal cations are studied and compared with the complex formation of corresponding crown ethers.