Servicenavigation

Project Details

Back

Projekt Print View

Polypnictogen-transfer reagents

Subject Area Inorganic Molecular Chemistry - Synthesis and Characterisation
Term from 2014 to 2023
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 258553031
 
Final Report Year 2023

Final Report Abstract

Polypnictogen compounds represent important classes of compounds in current research, which, on the one hand, are structurally closely related to the corresponding organic compounds due to the isolobal relationship, but, on the other hand, show considerable differences in view of their reactivity. Preparative access to these classes of substances habitually emanates from white phosphorus and yellow arsenic, respectively, the handling of which, however, is limited in many synthesis laboratories due to transport restrictions (P4) and extreme difficulties in regard of the in situ generation (As4). Apart from that, there are no molecular substituent-free polyantimony compounds that can be utilized as starting material for a directed consecutive reaction, including their transfer. As a consequence, the necessity emerged to develop suitable storage and transfer reagents for En molecules and units (E = P, As, Sb). Thus, it was the target of the present project to synthesize novel, easy-to-handle (in view of their preparation) transfer reagents with element-rich En units (n ≥ 4), which enable the directed transfer of such units under mild conditions. By using these En-rich educts, the access to polyarsenic and polyphosphorus derivatives not only of the transition metals but also of the main group elements was realized, which are available as so far unknown element-rich heteroaromates and heteroatomic cage compounds, respectively. To circumvent the handling of the extremely light-sensitive As4 and to thus provide the chemical community with Asn building blocks for a versatile follow-up chemistry, a storage material to keep yellow arsenic and white phosphorus, respectively, was developed and made available for the preparative application for the first time. Likewise, Sbn transfer reagents (n = 4, 6) were developed that can be brought to reaction at room temperature and even below. In general, the use of these En-rich educts enabled to access novel polyphosphorus, polyarsenic and also polyantimony derivatives not only of the transition metals, but also of several main group elements, which are available as so far unknown element-rich coordination compounds with interesting bonding relations. While the most important progress was made in the field of Asn compounds, besides some progress in P chemistry, it was also possible to make essential contributions to the Sbn chemistry as part of this project.

Publications

 
 

Additional Information

© 2025 DFG Disclaimer / Copyright / Privacy Policy

Textvergrößerung und Kontrastanpassung