DOI: 10.1002/asia.202300950 ISSN: 1861-4728
At the limits of bisphosphonio‐substituted stannylenes
Sina Nasemann, Roman Franz, Denis Kargin, Clemens Bruhn, Zsolt Kelemen, Torsten Gutmann, Rudolf Pietschnig- General Chemistry
- Biochemistry
- Organic Chemistry
Donor stabilization of Sn(II) and Pb(II) halides with 1,1’‑ferrocenylene bridged bisphosphanes has been explored for Fe(C5H4P(C6H5)2)2 (dppf), and Fe(C5H4PH(C4H9))2. These bisphosphanes are reacted with SnBr2 and PbCl2 with and without additional Lewis acid (AlCl3) forming acyclic and cyclic donor adducts from which the latter represent bisphosphoniotetrylenes. Since dynamic exchange in solution is observed, characterization includes solution and solid‐state NMR in addition to SC‑XRD, amended by DFT calculations.