1. Synthesis and Characterization of a Linear, Two-Coordinate Pt(II) Ketimide Complex
- Author
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Cook, Andrew W, Hrobárik, Peter, Damon, Peter L, Najera, Daniel, Horváth, Branislav, Wu, Guang, and Hayton, Trevor W
- Subjects
Inorganic Chemistry ,Chemical Sciences ,Physical Chemistry (incl. Structural) ,Other Chemical Sciences ,Inorganic & Nuclear Chemistry ,Inorganic chemistry ,Macromolecular and materials chemistry - Abstract
Herein we report the synthesis and characterization of a linear, two-coordinate Pt(II) ketimide complex, Pt(N═CtBu2)2 (1), formed via the reaction of PtCl2(1,5-COD) with 2 equiv of Li(N═CtBu2). Also generated in the reaction is the bimetallic complex [(tBu2C═N)Pt(μ-N,C-N═C(tBu)C(Me)2CH2)Pt(N═CtBu2)] (2). Both complexes 1 and 2 have been characterized by NMR spectroscopy and X-ray crystallography. Notably, complex 1 exhibits short Pt-N distances (av. Pt-N = 1.817 Å) and an unusually deshielded 195Pt chemical shift (δPt = -629 ppm) with a large 1J(195Pt,14N) coupling constant (537 Hz). These data, in combination with a detailed density functional theory electronic structure analysis, reveal the presence of highly covalent Pt═N multiple bonds formed by a combination of σ-donation, π-donation, and π-backdonation.
- Published
- 2019