Ion pair properties of lithium and cesium salts of carbazole
Ion pair properties of lithium and cesium salts of carbazole
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DOI:
10.1021/ja972839t
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发表时间:
1998-03-04
影响因子:
15
通讯作者:
Krom, JA
中科院分区:
文献类型:
--
作者:
Abbotto, A;Streitwieser, A;Krom, JA
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 K-2 = 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.