Insights into the Thermal Decomposition Mechanism of Molybdenum(VI) Iminopyridine Adducts

IF 7.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL
Lara K. Watanabe, Aaron D. Rogers, Marshall T. Atherton, Kieran G. Lawford, Bonwook Gu, Supill Chun, Sanghyun Lee, Dongkyun Lee, Han-Bo-Ram Lee, Seán T. Barry
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引用次数: 0

Abstract

Understanding the thermal behavior of vapor phase precursors is important to assess their potential for thin film deposition processes and to discern decomposition pathways. Here we present a series of dichloromolybdenum(VI) compounds on three different frameworks: the bis(alkylimido)-, dioxo- and mono(alkylimido)mono(oxo), which is the first foray into understanding the potential differences of decomposition mechanisms for molecules using these strongly bonded ligands. We report the synthesis of three novel metal complexes which have been fully characterized by spectroscopic techniques as well as single-crystal X-ray diffraction (SCXRD) and thermal analysis. Through in situ thermolysis reactions, we show the decomposition of all compounds generates the free N,N′-chelate ligand. Further thermal decomposition deviated from previously reported γ-H elimination, showing that the presence of β-hydrogens in the complexes provided alternative low-temperature decomposition pathways.

Abstract Image

钼(VI)亚氨基吡啶加合物的热分解机理研究
了解气相前驱体的热行为对于评估其在薄膜沉积过程中的潜力和辨别分解途径是重要的。在这里,我们提出了一系列二氯钼(VI)化合物在三种不同的框架:双(烷基限制)-,二氧-和单(烷基限制)单(氧),这是第一次尝试了解使用这些强键配体的分子分解机制的潜在差异。我们报道了三种新型金属配合物的合成,并通过光谱技术、单晶x射线衍射(SCXRD)和热分析对其进行了充分的表征。通过原位热裂解反应,我们发现所有化合物的分解产生自由的N,N '螯合配体。进一步的热分解偏离了先前报道的γ-H消除,表明配合物中β-氢的存在提供了另一种低温分解途径。
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来源期刊
Chemistry of Materials
Chemistry of Materials 工程技术-材料科学:综合
CiteScore
14.10
自引率
5.80%
发文量
929
审稿时长
1.5 months
期刊介绍: The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.
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