title: Formation of stable iron/cobalt NHC complexes via unexpected ring opening and in situ generation of a tridentate ligand.
abstract: The reactions of FeCl(2) and CoCl(2) with a bistriazolium salt yields the NHC complexes [Fe(III)(L1)(2)]I·H(2)O, [Fe(III)(L2)(2)]PF(6)·CH(3)CN and [Co(III)(L1)(2)]I·0.5CH(3)CN, through an unusual ring opening of one of the triazoyl rings, which leads to the formation of C,N,O tridentate ligands L1 or L2. Furthermore, a Fe(ii) species [Fe(II)(L1)(2)]·CH(2)Cl(2) was also obtained.
authors.affiliation: State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Gao-Feng
authors.initials: GF
authors.lastname: Wang
authors.forename: Xiao-Jiao
authors.initials: XJ
authors.lastname: Song
authors.forename: Fei
authors.initials: F
authors.lastname: Chen
authors.forename: Yi-Zhi
authors.initials: YZ
authors.lastname: Li
authors.forename: Xue-Tai
authors.initials: XT
authors.lastname: Chen
authors.forename: Zi-Ling
authors.initials: ZL
authors.lastname: Xue