476629-22-8Relevant academic research and scientific papers
Preparation of acetylide and propadienylidene complexes of iron(II)
Albertin, Gabriele,Agnoletto, Pierluigi,Antoniutti, Stefano
, p. 1755 - 1760 (2002)
Depending on the nature of the phosphine ligands, the reaction of phosphite-containing FeCl2 solutions with propargylic alcohols HC≡CCRR′(OH) affords propadienylidene [Fe(=C=C=CPh2){P(OEt)3}5] (BPh4)2 and [FeCl(=C=C=CPh2){PPh(OEt)2}4]BPh4 complexes and acetylide [Fe{C≡CCRR′(OH)}{P(OEt)3}5]BPh4 derivatives (R=R′ =Ph; R=Me, R′=Ph). In contrast, the reaction of phosphite-containing FeCl2 solutions with terminal alkynes RC≡CH affords mononuclear [Fe(C≡CPh){P(OEt)3}5]BPh4 and binuclear [{Fe[P(OEt)3]5}2(μ-1,4-C≡ CC6H4C≡C)](BPh4)2 acetylide derivatives. All the new complexes were characterised by IR and 1H, 31P and 13C NMR data, and a geometry in solution was also established.
