Silver(I) and Copper(I) Complexes of Semi‐Bulky Nitrogen‐Confused C‐Scorpionates

Authors

Denan Wang, Marquette UniversityFollow
Fathiya Jahan, Marquette University
Kristin J. Meise, Marquette University
Sergey Lindeman, Marquette UniversityFollow
James R. Gardinier, Marquette UniversityFollow

Document Type

Article

Language

eng

Publication Date

5-29-2020

Publisher

Wiley

Source Publication

European Journal of Inorganic Chemistry

Source ISSN

1434-1948

Abstract

Two new sterically demanding nitrogen‐confused C‐scorpionate ligands with a bis(3,5‐diisopropylpyrazol‐1‐yl)methyl group bound to the 3‐ position of a normal pyrazole (^HL^iPr2) or an N‐toluenesulfonyl pyrazole (^TsL^iPr2) have been prepared. Reactions between the ligands (^xL^iPr2) and silver trifluoromethanesulfonate, AgOTf, gave four new compounds of the types [Ag(^xL^iPr2)](OTf) (x = Ts, 1a; x = H, 2a) or [Ag(^xL^iPr2)2](OTf) (x = Ts, 1b; x = H, 2b) depending on the initial metal:ligand ratio. Similarly, the reactions with [Cu(CH₃CN)_4](PF₆) produce four new compounds of the type [Cu(^xL^iPr2)(CH₃CN)](PF₆) (x = Ts, 3a; x = H, 4a) or [Cu(^xL^iPr2)₂](PF6) (x = Ts, 3b; x = H, 4b). The solid‐state structures of four derivatives (1a·acetone, 3a, 3b·CH₂Cl₂, and 4b·2THF) were determined by single‐crystal X‐ray diffraction while all complexes were characterized in CH₃CN solution by NMR spectroscopy and ESI(+) MS. The eight new complexes catalyze the aziridination of styrene. The copper complexes were generally (but not exclusively) more active catalysts than their silver counterparts.

Comments

Accepted version. European Journal of Inorganic Chemistry, Vol. 2020, No. 20 (May 29, 2020): 1964-1978. DOI. © 2020 Wiley. Used with permission.

Recommended Citation

Wang, Denan; Jahan, Fathiya; Meise, Kristin J.; Lindeman, Sergey; and Gardinier, James R., "Silver(I) and Copper(I) Complexes of Semi‐Bulky Nitrogen‐Confused C‐Scorpionates" (2020). Chemistry Faculty Research and Publications. 1013.
https://epublications.marquette.edu/chem_fac/1013