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Monatshefte für Chemie / Chemical Monthly

, Volume 117, Issue 4, pp 429–435 | Cite as

Study on the reactions of the dinitrogen complexestrans-[M(N2)2(Ph2PCH2CH2PPh2)2] (M=Mo or W) with ethyldiazoacetate: Formation of an Azo compound and of a phosphazene species

  • Rudolf Herrmann
  • Armando J. L. Pombeiro
Anorganische Und Physikalische Chemie

Abstract

Complextrans-[Mo(N2)2(dppe)2] (dppe=Ph2PCH2CH2PPh2) reacts with NN=CHCOOEt in benzene solution to afford benzene-azomethane,Ph-N=N-CH3, as the main organic product. However, the phosphazene speciesPh2P(N2CHCOOEt)(CH2CH2)P(N2CHCOOEt)Ph2 is formed by irradiating aTHF solution oftrans-[W(N2)2(dppe)2] in the presence of ethyldiazoacetate; in moist solution, the phosphazene bonds undergo a partial hydrolysis, and the phosphonium species [Ph2P(NHNCHCOOEt)(CH2CH2)P(NHNCHCOOEt)Ph2]2+ appears to be formed.

Keywords

Catalysis Dinitrogen complexes Ethyldiazoacetate 

Untersuchungen zu den Reaktionen der Distickstoff-Komplexetrans-[M(N2)2(Ph2PCH2CH2PPh2)2] (M=Mo oder W) mit Ethyldiazoacetat: Die Bildung einer Azoverbindung und eines Phosphazens

Zusammenfassung

Die Komplexetrans-[Mo(N2)2(dppe)2] (dppe=Ph2PCH2CH2PPh2) reagieren mit NN=CHCOOEt in benzolischer Lösung zuPh-N=N-CH3 als organischem Hauptprodukt. Andererseits wird bei der Bestrahlung vontrans-[W(N2)2(dppe)2] inTHF-Lösung in der Gegenwart von Ethyldiazoacetat das PhosphazenPh2P(N2CHCOOEt)(CH2CH2)P(N2CHCOOEt)Ph2 gebildet; in feuchter Lösung erleidet die Phosphazen-Bindung eine teilweise Hydrolyse und die Phosphonium-Spezies [Ph2P(NHNCHCOOEt)(CH2CH2)P(NHNCHCOOEt)Ph2]2+ scheint gebildet zu werden.

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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Rudolf Herrmann
    • 1
  • Armando J. L. Pombeiro
    • 1
  1. 1.Centro de Química Estrutural, Complexo IInstituto Superior TécnicoLisboa CodexPortugal

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