Felgenhauer P, Labbow R, Schulz A, Villinger A. Synthesis and Characterization of Silylated Phosphonium [P(OSiMe
3)
4]
+ and Phosphate [O
2P(OSiMe
3)
2]
- Salts.
Inorg Chem 2018;
57:9348-9353. [PMID:
29985595 DOI:
10.1021/acs.inorgchem.8b01323]
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Abstract
Starting from an optimized synthesis of silylated phosphoric acid, OP(OSiMe3)3, a borate salt bearing the [P(OSiMe3)4]+ cation was generated in the reaction of OP(OSiMe3)3 with [Me3Si-H-SiMe3][B(C6F5)4], isolated, and fully characterized. Analogously to the protonated species, phosphoric acid (H3PO4) reaction of OP(OSiMe3)3 with a base led to the formation of the unknown [O2P(OSiMe3)2]- anion, which could be crystallized as potassium salt and structurally characterized, too. Both [P(OSiMe3)4]+ and [O2P(OSiMe3)2]- can be regarded as the formal autoprotolysis products of OP(OSiMe3)3.
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