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Coordination polymers based on [Cp*Fe(η5-P5)]: solid-state structure and MAS NMR studies.
Fabian Dielmann1, Andrea Schindler, Sabine Scheuermayer
1Institut für Anorganische Chemie der Universität Regensburg, 93040 Regensburg, Germany.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|January 4, 2012
Summary
New polymeric compounds were synthesized from pentaphosphaferrocene and copper halides. These structures showcase the versatile coordination of the cyclo-P(5) ligand in one- and two-dimensional polymers.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Coordination Chemistry
Background:
- Pentaphosphaferrocene, [Cp*Fe(η(5)-P(5))], is a unique organometallic compound featuring a cyclo-pentaphosphorus ligand.
- Copper halides (CuX) are versatile building blocks in coordination chemistry.
Purpose of the Study:
- To synthesize and characterize novel one- and two-dimensional polymeric compounds using pentaphosphaferrocene and copper halides.
- To investigate the coordination behavior of the cyclo-P(5) ligand in these new polymeric structures.
Main Methods:
- Slow diffusion reactions between [Cp*Fe(η(5)-P(5))] and CuX (X=Cl, Br, I).
- Single-crystal X-ray diffraction analysis for structural characterization.
- Magic Angle Spinning (MAS) NMR spectroscopy for selected examples.
Main Results:
- Formation of one- and two-dimensional polymeric compounds with diverse structures.
- Demonstration of versatile coordination modes of the cyclo-P(5) ligand, ranging from two to five coordinating phosphorus atoms.
- Identification of unprecedented coordination modes, including 1,3- and 1,2,3,4- P coordination, and σ/π bonding.
Conclusions:
- The cyclo-P(5) ligand exhibits remarkable flexibility in coordinating to copper centers, leading to complex polymeric architectures.
- The study expands the understanding of phosphorus-based ligands in coordination polymers.
- These findings open avenues for designing novel materials with tailored properties.
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