分子间力的扰动：低共熔物作为制备气相沉积前驱体的新工具。

Disturbance of intermolecular forces: eutectics as a new tool for the preparation of vapor-phase deposition precursors.

作者信息

Land Michael A, Robertson Katherine N, Clyburne Jason A C, Barry Seán T

机构信息

Department of Chemistry, Carleton University, Ottawa, Ontario, K1S 5B6, Canada.

Department of Chemistry, Saint Mary's University, Halifax, Nova Scotia, B3H 3C3, Canada.

出版信息

Phys Chem Chem Phys. 2023 Mar 22;25(12):8336-8340. doi: 10.1039/d2cp05341a.

DOI:10.1039/d2cp05341a

PMID:36916546

Abstract

The volatile bis(-butylimido)dichloromolybdenum(VI) compounds, (BuN)MoCl·dad (dad = 1,4-di--butyl-1,3-diazabutadiene) (1) and [(BuN)MoCl(-Cl)·(BuNH)] (2), form a eutectic, with a two to one composition ( = 0.33). A decrease of 40 °C in the melting temperature has been observed between the eutectic mixture and the pure compounds. We have isolated a co-crystal of (BuN)MoCl·dme (dme = 1,2-dimethoxyethane) (3) and 2, also in a two to one ratio, which serves as a structural model for such mixtures. The lower melting point of carefully chosen eutectic mixtures can offer more consistent precursor delivery in deposition processes.

摘要

挥发性双（丁基亚氨基）二氯钼（VI）化合物，(BuN)MoCl₂·dad（dad = 1,4 - 二叔丁基 - 1,3 - 二氮杂丁二烯）（1）和[(BuN)MoCl(μ - Cl)·(BuNH)]（2）形成一种共晶，其组成比例为二比一（χ = 0.33）。在共晶混合物和纯化合物之间观察到熔点降低了40°C。我们还分离出了(BuN)MoCl₂·dme（dme = 1,2 - 二甲氧基乙烷）（3）和2的共晶体，其比例同样为二比一，它可作为此类混合物的结构模型。精心选择的共晶混合物的较低熔点在沉积过程中能提供更稳定的前驱体输送。