title: The synthesis and structures of 1,1'-bis(sulfonyl)ferrocene derivatives.
abstract: A series of 1,1'-bis(sulfonyl)ferrocene compounds were produced via the 1,1'-bis(sulfonate)ferrocene ammonium salt. This compound can be readily converted to 1,1' bis(sulfonylchloride)ferrocene. By varying stoichiometry and reaction times, both mono- and bis-sulfonamide derivatives can be synthesized. All new compounds presented in this report have been structurally characterized. The structures of the bis-sulfonamide systems are similar to the well-studied bis(amide) ferrocene compounds. Intermolecular hydrogen bonding is observed, typically between NH and SO groups of neighboring sulfonamides. However in the bis(GABA) derivative, intermolecular NH to CO hydrogen bonding interactions are present.
authors.affiliation: Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
authors.forename: Kullapa
authors.initials: K
authors.lastname: Chanawanno
authors.forename: Cole
authors.initials: C
authors.lastname: Holstrom
authors.forename: Laura A
authors.initials: LA
authors.lastname: Crandall
authors.forename: Henry
authors.initials: H
authors.lastname: Dodge
authors.forename: Victor N
authors.initials: VN
authors.lastname: Nemykin
authors.forename: Richard S
authors.initials: RS
authors.lastname: Herrick
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Ziegler