On reaction of [Re(CO)2H(PPh3)3] with aroyl azides, RCON3(R = Ph or C6H4Me-p), amido-complexes of rhenium-(I), [Re(CO)2(NHCOR)(PPh3)2], may be isolated. I.r. data and the chemical behaviour of these new complexes suggest that the carbonyl group of the organic ligand is also involved in the co-ordination to the metal. Reactions of these complexes with neutral ligands (L) give [Re(CO)2L(NHCOR)(PPh3)2](L = CO or NBunH2), while second aryamines NR′2H (R′= Et or Prn) react only in the presence of carbon dioxide and lead to the formation of carbamate derivatives [Re(CO)2(O2CNR′2)(PPh3)2]. Analogous dithiocarbamate derivatives have been isolated by using CS2 instead of CO2. The amido-complexes also readily react with carboxylic acids, R″CO2H, to give carboxylato-derivatives [Re(CO)2(O2CR″)(PPh3)2](R″= H, Me, ClCH2, Et. or Ph), while with mineral acids HX (X = Cl or BF4) ionic amido-complexes [Re(CO)n(NH2COR)(PPh3)2]X (n= 2 or 3; R = C6H4Me-p) have been obtained. Theformate [Re(CO)2(O2CH)(PPh3)2] has also been obtained from the reaction of CO2with [Re(CO)2-H(PPh3)3].

Synthesis and reactions of amido complexes of rhenium I. Isolation of new carbamate derivatives / G. La Monica, S.Cenini, F.Porta, M.Pizzotti. - In: JOURNAL OF THE CHEMICAL SOCIETY DALTON TRANSACTIONS. - ISSN 0300-9246. - :18(1976), pp. 1777-1782.

Synthesis and reactions of amido complexes of rhenium I. Isolation of new carbamate derivatives

S.Cenini
Secondo
;
F.Porta
Penultimo
;
M.Pizzotti
Ultimo
1976

Abstract

On reaction of [Re(CO)2H(PPh3)3] with aroyl azides, RCON3(R = Ph or C6H4Me-p), amido-complexes of rhenium-(I), [Re(CO)2(NHCOR)(PPh3)2], may be isolated. I.r. data and the chemical behaviour of these new complexes suggest that the carbonyl group of the organic ligand is also involved in the co-ordination to the metal. Reactions of these complexes with neutral ligands (L) give [Re(CO)2L(NHCOR)(PPh3)2](L = CO or NBunH2), while second aryamines NR′2H (R′= Et or Prn) react only in the presence of carbon dioxide and lead to the formation of carbamate derivatives [Re(CO)2(O2CNR′2)(PPh3)2]. Analogous dithiocarbamate derivatives have been isolated by using CS2 instead of CO2. The amido-complexes also readily react with carboxylic acids, R″CO2H, to give carboxylato-derivatives [Re(CO)2(O2CR″)(PPh3)2](R″= H, Me, ClCH2, Et. or Ph), while with mineral acids HX (X = Cl or BF4) ionic amido-complexes [Re(CO)n(NH2COR)(PPh3)2]X (n= 2 or 3; R = C6H4Me-p) have been obtained. Theformate [Re(CO)2(O2CH)(PPh3)2] has also been obtained from the reaction of CO2with [Re(CO)2-H(PPh3)3].
Settore CHIM/03 - Chimica Generale e Inorganica
Article (author)
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/182320
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 24
  • ???jsp.display-item.citation.isi??? ND
social impact