Reaction of amides of trivalent phosphorus acids with tellurium

Grechkin, N. P.; Нуретдинов, И. А.; Buina, N. A.

doi:10.1007/bf00907622

Cited by 2 publications

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“…We report herein the preparation of CdTe quantum platelets (nanoplatelets) and CdTe quantum wires using the tellurium precursor (Me 2 N) 3 PTe. This tellurium compound, first reported in 1969, has not previously been employed in nanocrystal synthesis. We show that its chemical reactivity exceeds that of tri- n -octylphosphine telluride (TOPTe), which with other trialkylphosphine tellurides are the most often used Te precursors for syntheses of CdTe nanocrystals in organic solvents. − …”

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confidence: 99%

Tellurium Precursor for Nanocrystal Synthesis: Tris(dimethylamino)phosphine Telluride

2018

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Preparations of CdTe quantum platelets, magic-size (CdTe) 13 nanoclusters, and CdTe quantum wires are described using (Me 2 N) 3 PTe (with (Me 2 N) 3 P) as a Te precursor. The (Me 2 N) 3 PTe/(Me 2 N) 3 P precursor mixture is shown to be more reactive than mixtures of trialkylphosphine tellurides and the corresponding trialkylphosphines, R 3 PTe/R 3 P, which are commonly employed in nanocrystal syntheses. For syntheses conducted in primary amine solvents, (Me 2 N) 3 PTe and (Me 2 N) 3 P undergo a transamination reaction, affording (Me 2 N) x (RHN) 3−x PTe and (Me 2 N) x (RHN) 3−x P (R = n-octyl or oleyl). The transaminated (Me 2 N) x (RHN) 3−x PTe derivatives are shown to be the likely Te precursors under those conditions. The enhanced reactivities of the tris(amino)phosphine tellurides are ascribed to increased nucleophilicity due to the amino-N lone pairs.

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confidence: 99%

Tellurium Precursor for Nanocrystal Synthesis: Tris(dimethylamino)phosphine Telluride

2018

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“…Thus, reaction times are reduced to a few hours at ca. 50 °C in benzene or cyclohexane for the synthesis of (R 2 N) 3 PTe (R = Me, ,, Et, R 2 N = morpholino, piperidino, pyrrolidino , ). The latter are readily crystallized (section ) and exhibit enhanced thermal and air stability as compared to their trialkyl analogues.…”

Section: Organophosphorus(v) Telluridesmentioning

confidence: 99%