Dong T.-YLee T.-JHuang B.-RSHIE-MING PENGLee G.-H.2022-12-142022-12-14200113877003https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035147371&doi=10.1016%2fS1387-7003%2800%2900212-4&partnerID=40&md5=c334e60daf2198c1d957268e36bc3a9chttps://scholars.lib.ntu.edu.tw/handle/123456789/626336The X-ray structure of 1′, 1‴-dinaphthylmethylbiferrocenium BF4 has been determined. The 57Fe Mössbauer and EPR results of 1′, 1‴-dinaphthylmethylbiferrocenium BF4 and PF6 salts are also reported. The relatively minor perturbations caused by the counterions have pronounced effects on the rate of intramolecular electron transfer. © 2001 Elsevier Science B.V.Biferrocenium; Electron transfer; Metallocene; Mixed-valence 1′, 1‴-dinaphthylmethylbiferroceniumferrocene derivative; fluorine derivative; iron 57; methyl group; naphthyl group; article; chemical bond; chemical interaction; crystal structure; electron spin resonance; electron transport; Mossbauer spectroscopyjournal article10.1016/S1387-7003(00)00212-42-s2.0-0035147371