Zusammenfassung
A new class of neutral bidentate ligands with pnictogenyl-functional sites has been obtained. The reaction of tmeda center dot (BH2I)(2) (1, tmeda=tetramethylethylendiamine) with different phosphanides yields the corresponding bidentate phosphanylboranes tmeda center dot (BH2PH2)(2) (2a), tmeda center dot (BH2PPh2)(2) (2b), and tmeda center dot (BH(2)tBuPH)(2) (2c). This reaction strategy could ...
Zusammenfassung
A new class of neutral bidentate ligands with pnictogenyl-functional sites has been obtained. The reaction of tmeda center dot (BH2I)(2) (1, tmeda=tetramethylethylendiamine) with different phosphanides yields the corresponding bidentate phosphanylboranes tmeda center dot (BH2PH2)(2) (2a), tmeda center dot (BH2PPh2)(2) (2b), and tmeda center dot (BH(2)tBuPH)(2) (2c). This reaction strategy could be further extended to synthesize the first bidentate arsanylborane tmeda center dot (BH2AsPh2)(2) (3). Depending on the substituents on the phosphorus, these compounds form different AuI complexes, to build either polymeric tmeda center dot (BH2PH2AuCl)(2) (4a), or monomeric tmeda center dot (BH2PPh2AuCl)(2) (4b) products. These compounds form also neutral oligomeric group 13/15 chain-like molecules by coordination to a boron moiety such as tmeda center dot (BH2PH2BH3)(2) (5a) and tmeda center dot (BH2AsPh2BH3)(2) (5b). DFT calculations provide insight into the differences between the syntheses of mono-and bidentate pnictogenylboranes.
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