High‐Resolution CP‐MAS ¹³C‐NMR Spectra of Allylzinc Compounds—Structural Similarities and Differences in the Solid State and in Solution

Abstract

Whether the allyl ligand is η1- (1), η1, η2- (2) or η3-bound (3) can be ascertained by high-resolution solid-state CP-MAS 13C-NMR spectroscopy in the case of 3,3-dimethylallylzinc chloride (η1), bis(2-methylallyl)zinc (η1,η2), bis(allyl)zinc and 2-methylallylzinc chloride (each η3). In contrast, in donor solvents the allyl groups in all four cases are bound in an η1-like fashion to zinc.