Highly reactive Monomers-Building Blocks for novel Oligomers and Polymers

时间：2026年4月23日 （星期四）上午10：00

地点：化学学科楼A508

报告人简介：

    Manfred Scheer，德国雷根斯堡大学教授，英国皇家化学学会院士和德国国家科学院院士。曾获有机磷化学领域国际ARBUZOV奖-2017年（由俄罗斯鞑靼斯坦共和国总统颁发）。曾任RSC杂志Chemical Communications副主编，担任《无机化学前沿》杂志国际顾问委员会成员。以第一或通讯作者在Science、J. Am. Chem. Soc.、Nat. Commun. 、Angew. Chem. 等杂志发表SCI论文。主要从事新型亚稳态固体、纳米粒子和材料的分子前体开发、具有过渡金属元素多重键的高反应性化合物制备、具有多聚体配体复合物的超分子化学以及混合主族元素化合物作为功能化材料等研究。

报告摘要：

The talk will discuss two classes of main group element compounds, which are isolobal related to all carbon derivatives: (i) the parent compounds of the pnictogenyltrielanes (pnictogen: Group 15 element; triel: Group 13 element) and (ii) polyphosphorus ligand complexes. The parent compounds of the pnictogenyltrielanes of type A have been never synthesised nor detected in the gas phase or by matrix isolation techniques. By Lewis acid/base stabilisation as well as by an only Lewis base stabilisation the first representatives of type B and C have been obtained.1 Whereas the Al and Ga containing compounds show a high tendency to eliminate H2 to form oligomers and polymers, the boron containing ones undergo only a polymerisation reaction after elimination of the base from type C compounds. Moreover, the catenation of such monomeric units to cationic, anionic or neutral oligomers will be presented. Polypnictogen ligand complexes of phosphorus and arsenic are activated forms of white phosphorus and yellow arsenic and therefore interesting starting materials for further transformations in terms of an atom-efficient way to organo-substituted pnictogen derivatives, which was successfully done by using pentaphosphaferocene. Furthermore, [Cp2Mo2(CO)4(μ,η2-E2)] (E = P (A); As (B), Sb (C); Cp = C5H5) are used in two- and three-component reactions to form 0D, 1D, 2D and 3D aggregates.