WebJan 10, 2024 · The phosphorus atom of the N-alkyl phosphoranimine has similar reactivity as in the N-silylated monomer (C tr,X ~1) but forms an unreactive group. The stable alkyl group of the new phosphoranimine leads to termination of the chain, whereas the labile silyl group of the monomer results in continued propagation of the chain, as shown in Scheme 5. WebIn addition, phosphoranimine 2 was found to undergo an unexpected oxidative cyclization reaction when treated with the oxygen transfer agent pyridine-N-oxide to yield a P-chlorophosphoryl-ox-3-azoline (18). This article is part of the themed collection: Dalton Transactions 40th Anniversary About. Cited by. Related ...
Phosphine NIOSH CDC
WebJun 1, 2007 · Section snippets Formation of N-donor stabilized phosphoranimine cations. The initial strategy for the preparation of cationic phosphoranimines involved chloride abstraction from the phosphoranimine monomer Cl 3 P NSiMe 3 (2) [8].The halide abstracting agent AgOTf (OTf = OSO 2 CF 3) was chosen since AgOTf has proven to be … WebThe visualization of organs and tissues using 31P magnetic resonance (MR) imaging represents an immense challenge. This is largely due to the lack of sensitive biocompatible probes required to deliver a high-intensity MR signal that can be distinguished from the natural biological background. Synthetic water-soluble phosphorus-containing polymers … fiber optic bend radius calculator
Controlled Synthesis of Polyphosphazenes with Chain-Capping …
WebApr 1, 2024 · Two paramagnetic cyanoosmium(III) phosphoranimine complexes cis-[Os III (L 2)(CN) 2 (NHPPh 3)(PPh 3)] and (PPh 4)[Os III (L 2)(CN) 3 (NHPPh 3)] were successfully prepared from the reactions of high-valent osmium(VI) nitrido complexes and PPh 3. The kinetics of these reactions were also studied by UV/vis spectrophotometry. WebSep 12, 2024 · A phosphoranimine compound comprising a cationic portion bonded to a nitrogen atom of the phosphoranimine compound, a phosphorus atom bonded to the nitrogen atom, pendant groups bonded to the phosphorus atom, and a counterion. WebDec 1, 2024 · Poly (dichloro)phosphazenes represent one of the most versatile classes of main-group polymers based on the repeating unit [N = PCl 2] n, where Cl can be … fiber optic blank out sign