From new transition metal carbonyl and nitrosyl cations of the 5th to 10th group to 'naked' M+ synthons and their use for substitution reactions, activation of small molecules and access to potential catalysts

通过这一延伸建议，我们描述了制备新的难以捉摸的同眠过渡金属羰基或亚硝基阳离子的途径，也是迈向同眠二氮阳离子的第一步。我们将它们用于进一步的替代化学，目标是有机金属教科书添加物以及适合小分子活化的潜在催化剂阳离子，后者使用地球上丰富的金属Cr…Ni，重点是Fe和Co。对于这种化学，人们需要合适的弱配位（反）阴离子（WCAs）以及合适的氧化剂，或者更准确地说，是用于电离中性前体的脱电子剂。在第一个阶段，我们在创新的溶剂体系中建立了几乎理想的wca以及新型去电子剂，如邻二氟苯或1,2,3,4-四氟苯。这些方法的全部潜力将在第二个资助期进行探索，以制备对元素化学具有基本重要性的丰富的教科书化合物。方法和材料应提升到普遍适用的水平，以广泛应用于合成化学领域。最后，但并非最不重要的是，我们将继续发展无迹转移氧化的概念。

With this prolongation proposal we describe routes to prepare novel elusive homoleptic transition metal carbonyl or nitrosyl cations, but also the first steps towards homoleptic dinitrogen cations. We use them for further substitution chemistry targeting organometallic textbook additions as well as potential catalyst cations suitable for small molecule activation, the latter using the earth-abundant metals Cr…Ni, with a focus on Fe and Co. For this chemistry, one needs suitable and weakly coordinating (counter)anions (WCAs) as well as suitable oxidants, or more correctly, deelectronators for the ionization of the neutral precursors. In the first period we have established access to almost ideal WCAs as well as novel deelectronators in innovative solvent systems like ortho-difluorobenzene or 1,2,3,4-tetrafluorobenzene. The full potential of these methodologies shall be explored with this second funding period to prepare a wealth of textbook compounds of basic importance for the chemistry of the elements. The methods and materials shall be lifted to a generally applicable level for wide use in the synthetic chemistry community.Last, but not least we will continue to develop the concept of traceless transfer oxidation.