Tetrahedron

Linear free-energy relationships between stability parameters of substituted tropylium and cyclopropenylium ions as measured by reduction rate with chromium (II), …

K Okamoto, K Takeuchi, K Komatsu, Y Kubota, R Ohara…

Index: Okamoto, Kunio; Takeuchi, Ken'Ichi; Komatsu, Koichi; Kubota, Yasuhiro; Ohara, Riichiro; et al. Tetrahedron, 1983 , vol. 39, # 23 p. 4011 - 4024

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Citation Number: 45

Abstract

Nine tropylium ions have been synthesized and the empirical stability parameters (i)–(iv) have been measured along with the parameters of known tropylium and cyclopropenylium ions:(I) the Cr (II)-ion reduction rate constant (k2) in 10% aqueous hydrochloric acid at 25.0°;(ii) the charge-transfer frequency (vCTmax) with pyrene in 1, 2-dichloroethane;(iii) the reduction peak potential (Ered) in dichloromethane or in acetonitrile; and (iv) the pKR+ ...