What does this research mean for the field?

[Co(acacen)Li(tmhd)] is a suitable mixed-metal precursor for the chemical vapor deposition of Li-Co-O oxide films. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The main aim is to synthesize and characterize new volatile heterometallic complexes for CVD of oxide films.

March 16, 2026Journal of Structural Chemistry0 citations

Synthesis, Structures, and Thermal Properties of Volatile Li/Co Complexes for the Chemical Vapor Deposition of Mixed Oxide Films

VKV. V. KrisyukNikolaev Institute of Inorganic Chemistry SKS. Urkasym kyzyNikolaev Institute of Inorganic Chemistry ASA. S. SukhikhNikolaev Institute of Inorganic Chemistry

Key Points

The main aim is to synthesize and characterize new volatile heterometallic complexes for CVD of oxide films.
Synthesis of new complexes [Co(acacen)Li(tmhd)] and Li2CoL4.
Characterization of crystal structures of the synthesized complexes.
Investigation of thermal properties using vacuum sublimation and TGA analysis.
Assessment of complexes as precursors for metal-organic chemical vapor deposition (MOCVD).
The crystal structures of [Co(acacen)Li(tmhd)] and [CoL2]2 were successfully determined.
[Co(acacen)Li(tmhd)] proved to be a promising mixed-metal precursor for CVD processes.
Thermal properties suggest good volatility and stability under sublimation conditions.

Abstract

New volatile heterometallic complexes Co(acacen)Li(tmhd) and Li2CoL4 (acacen = N,N′-ethylenebis(acetylacetoiminate); tmhd = 2,2,6,6-tetramethylheptane-3,5-dionate (dipivaloylmethanate); L = 2,2-dimethyl-6-methoxy-6-methylheptane-3,5-dionate) are synthesized and characterized. The crystal structures of Co(acacen)Li(tmhd) and CoL22 as the initial monometallic compound for Li2CoL4 are determined and discussed. The thermal properties of the compounds are investigated by vacuum sublimation and TGA, and the compounds themselves are studied from the standpoint of their suitability as precursors for metal-organic chemical vapor deposition (MOCVD). Based on the results of the study, Co(acacen)Li(tmhd) is recommended as a mixed-metal precursor for CVD of Li-Co-O oxide films.

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