Mixed main group element compounds of p block elements

鉴于烃类化合物在分子和聚合物化学中的各种用途，其性质和应用的巨大概况，提出了其他主族元素链的等电子母体（含H）同系物的研究状况的问题。然而，在过去的十年中，分别对于第13/15族和第14/15族化合物，在稳定这种（也是母体）物种方面取得了一些进展，在一种化合物中分别具有第13/14/15族和/或第13/14/15/16族元素组合的化合物中存在明显缺陷。而对于前一类化合物，只有少数几个例子存在的主要有机取代的衍生物，在这里只在支化的形式，或主要是笼代表，后一类是前所未有的。这对于母体全氢取代的链状化合物尤其如此，由于它们在环境条件下的低稳定性，它们更难以合成。因此，开发制备方法和探索这类未知化合物的需求是显而易见的。因此，本项目的目的是合成，稳定和表征前所未有的一类链状化合物，含有第13，14，15族的不同元素，此外，以其全氢取代的母体化合物的形式存在于第16族。为了稳定这些不稳定的化合物，将应用供体/受体（DA）稳定化的概念。所有的准备工作都将伴随着对所需产物的反应途径的计算研究（基于DFT），包括过渡态，产物的稳定性和降解及其电子和光学性质。此外，通过张力测量，将获得关于第13/14/15和13/14/15/16族元素的目标混合元素化合物的挥发性和热稳定性的信息，这对于它们在三元和四元材料的CVD或ALD工艺中作为单源前体的潜在用途是必不可少的。

In view of the tremendous profile of properties and applications of hydrocarbon compounds with respect to their diverse use in molecular and polymer chemistry, the question of the state of research of the isoelectronic parent (H containing) homologues of other main group element chains is raised. Here, whereas, over the last decade, for Group 13/15 and Group 14/15 compounds, respectively, some progress in the stabilization of such (also parent) species has been made, there is a clear deficit in the compounds featuring the combination of elements of Group 13/14/15 and/or Group 13/14/15/16, respectively, in one compound. Whereas for the former class of compounds only few examples exist of mostly organosubstituted derivatives and here only in the form of branched or, predominantly, cage representatives, the latter class is unprecedented. This is especially true for the parent all-hydrogen substituted chain compounds, which are much more difficult to synthesize due to their low stability at ambient conditions. Therefore, the need to develop preparative approaches and explore this unknown class of compounds is obvious. Hence, the present project aims at the synthesis, stabilization and characterization of the unprecedented class of catena compounds containing different elements of Group 13, 14, 15, and, in addition, of Group 16 in the form of their all-hydrogen substituted parent compounds. For the stabilization of these unstable compounds, the concept of Donor/Acceptor (DA) stabilization will be applied. All the preparative work will be accompanied by computational studies (DFT-based) on the reaction pathways to the desired products, including transition states, the stability and degradation of the products and their electronic and optical properties. Moreover, by tensimetric measurements, information on the volatility and thermal stability of the targeted mixed-element compounds of Group 13/14/15 and 13/14/15/16 elements will be obtained, which is essential for their potential use as single-source precursors in CVD or ALD processes for ternary and quaternary materials.