Polymers containing phosphorus atoms in the backbone qualify as stereochemically complex systems owing to the numerous stereocenters present either in asymmetrically substituted polymeric σ3λ3 phosphanes or σ4λ5 phosphoranes. One way of reducing the number of possible isomers is to use stereochemically predefined precursors like the phosphorus based [n]ferrocenophanes.[1-4] Some of these examples may be regarded as molecular fragments of inorganic materials such as black phosphorus. Moreover, further electronic variation can be achieved by incorporating group 14 elements into such chains.[3] In case of the heavier group 14 elements low-valent phosphane substituted tetrylenes can be obtained. With respect to polymeric systems, attachment of ferrocene endows attractive properties to polymers based on the redox-switchable behavior.[5]
We gratefully acknowledge financial support by the following programs and institutions: Deutsche Forschungsgemeinschaft and ERA Chemistry (PI 353/8-1 PI 353/9-1), COST action CM1302 “SIPs”.
References:
[1] C. Moser, F. Belaj, R. Pietschnig, Chem. Eur. J. 2009, 15, 12589-12591.
[2] C. Moser, F. Belaj, R. Pietschnig, Phosph. Sulfur Rel. El. 2015, 190, 837-844.
[3] D. Kargin, Z. Kelemen, K. Krekić, M. Maurer, C. Bruhn, L. Nyulászi, R. Pietschnig, Dalton Trans. 2016, 45, 2180-2189.
[4] S. Borucki, Z. Kelemen, M. Maurer, C. Bruhn, L. Nyulászi, R. Pietschnig, Chem. Eur. J. 2017, accepted. doi: 10.1002/chem.201701905.
[5] R. Pietschnig, Chem. Soc. Rev. 2016, 45, 5216 - 5231
P - Advanced synthesis and characterization , P - General aspects of inorganic chemistry , Si - General aspects of inorganic chemistry , Si - Advanced synthesis and characterization
