Synthetic and Structural Studies of Ethyl Zinc β-Amidoenoates and β-Ketoiminates

Molecules

MalavikaA. Bhide¹  CarolineE. Knapp¹  JoeA. Manzi¹  ClaireJ. Carmalt¹ 

[1] Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK;

关键词: precursor;    dimerisation;    materials;    zinc oxide;    chemical vapour deposition;   

DOI  :  10.3390/molecules26113165

来源: DOAJ

【 摘 要 】

A set of heteroleptic ethyl zinc $\beta$-amidoenoates (1, 2) and $\beta$-ketoiminates (3) of the form [LZnEt]₂ with varying steric bulk have been synthesised via the reaction of diethylzinc with $\beta$-aminoenoate ligands HL¹ and HL² and $\beta$-ketoimine HL³. These complexes have been characterised via ¹H and ¹³C NMR, mass spectrometry and single-crystal X-ray diffraction, which unambiguously determined all three structures as dimeric species in the solid state. We observe the unusual dimerisation of 1 and 2 through coordination of the central zinc atom to the methine carbon of the second monomer, which gives these complexes high reactivity. The thermal properties of complex 3 are explored via thermal gravimetric analysis (TGA), to investigate their potential as single-source precursors to zinc oxide, which shows that 3 has a significantly lower decomposition temperature as compared to its bis-ligated counterpart [Zn(L³)₂], which gives 3 promise as a single-source precursor to zinc oxide.

【 授权许可】

Unknown