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Ion pair properties of lithium and cesium salts of carbazole
Abbotto, Alessandro,Streitwieser, Andrew,Stratakis, Manolis,Krom, James A.
, p. 1718 - 1723 (1998)
The lithium salt of carbazole, LiCb, is monomeric in THF in the concentration range (1-5) x 10-3 M. It is a contact ion pair (CIP) with an effective ion pair pK of 13.48 on a scale where fluorenyllithium solvent separated ion pairs (SSIP) are 22.90 (per hydrogen). The cesium salt, CsCb, is a mixture of monomer and dimer with K2 = 300 M-1. The monomer forms a 1:1: complex, CsCb·CbH, with K(c) = 62 M-1. The ion pair pK of monomeric-CsCb is 19.24.
