The least coordinating anion

Chemistry of the Carba-closo-dodecaborate(−) Anion, CB11H12-

“…65 One of the first isolated iron complexes of 1 was Fe + -(TPP)1, where 1 binds to the iron via a Fe-H-B(12) bridge. 130 Zirconium-based olefin polymerization catalysts have been synthesized by silver salt metathesis reaction of Ag + 1 with zirconium alkyls. 66 In Cp 2 Zr(η 2 -CH 2 Ph)(1) (287), 1 is coordinated to Zr via B(12)-H-Zr.…”

Preparation and characterization of Tl(1,2-C2H4Cl2)B(OTeF5)4: a metal complex of a least coordinating solvent and a least coordinating anion

“…Structural, conductimetric, and 13c NMR spectroscopic data have left little doubt that 1,2-dichloroethane is a stronger ligand for Ag(1) than dichloromethane (7). It is sensible that this order would be preserved for Tl (1). It is also sensible that 1,1,2-trichlorotrifluoroethane would be the weakest donor of all three.…”

“…One term that has been used for such new anized. ions is "least coordinating" anions (1). Examples include B(OTeF& (2), BlICH17-(1, 3), and B k , -(& = C6H5 (4) or 3,5-C6H3(CF3)?…”

Synthesis and Characterization of Imidazolium Salts with the Weakly Coordinating [B(C6F5)4]– Anion

“…Robert et al reported the anions [(C 6 F 5 ) 3 M-LN-M(C 6 F 5 ) 3 ] − , with M = B or Al and the linking group LN being azide, dicyanamide, and imidazolide, which were found to be the most stable and effective activators for olefin polymerization reactions [8,9]. [CB 11 H 12 ] − and related carborane anions developed by Reed et al were applied in many systems, despite the expensive and time-consuming multistep procedure of their preparation [10].…”