Compounds containing Organic Molecules or Complex Ions

4 Compounds containing Organic Molecules or Complex Ions 

Co-ordination compounds of the alkali- and alkaline-earth metals with covalent characteristics have been reviewed. 

The distribution of alkali-metal picrate 1 1 complexes of dibenzo-18-crown-6 between water and benzene has been investigated. The formation of 2 1 complexes was recognized for Rb and Cs ions in a large excess of polyether. The extractability of complex cation-picrate ion pairs decreased in the order K Rb Cs Na Li. This order was confirmed in a parallel investigation, and bis-(3,5-di-t-butylbenzo)-18-crown-6 also has good extraction ability for alkali-metal ions.  

Sadakane, T. Iwachido, and K. Toei, Bull. Chem. Soc. Japan, 1975, 48, 60. 

Danesi, H. Meider-Gorican, R. Chiarizia, and G. Scibona, J. Inorg. Nuclear Chem., 1975, 37, 1479. 

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