18989-05-4

Upstream product

• 107-00-6 but-1-yne 
• 15321-51-4 diiron nonacarbonyl 
• 76299-49-5 (CO)3Fe(N₄(C₆H₅)2) 
• 74-99-7 prop-1-yne 
• 501-65-5 diphenyl acetylene 
• 536-74-3 phenylacetylene 
• 928-49-4 hex-3-yne 

Downstream Products

• 153819-40-0 Fe3(CO)9(μ3-NPh)2 

Relevant academic research and scientific papers

Preparation, structure, and some reactions of the evasive azobenzene complex

The title compound (1) was obtained in a two-step sequence from Fe2(CO)9 and phenyl azide via the intermediate tetraazadiene complex (CO)3Fe*Ph2N4 (2b).Its N-N bond length (1.41 Angstroem) is 0.04 Angstroem longer than that in Fe2(CO)

Reactivity of Fe3 and Ru3 μ3-phenylimido clusters with alkynes, allene, and 1,3-cyclohexadiene

The reactivity of alkynes with the imido clusters Ru3(μ3-NPh)2(CO)9, H2Ru3(μ3-NPh)(CO)9, Fe3(μ3-NPh)(CO)10, Fe3(μ3-NPh)2(CO)9, and H2Fe3(μ3-NPh)(CO)9 has been examined. The cluster Fe3(μ3-NPh)(CO)10 reacts regiospecifically with a series of alkynes to form the binuclear ferrapyrrolinone complexes Fe2(μ2-η 3-RC=C(R′)C(O)NPh)(CO)6, possessing a metallacycle formed by coupling of the alkyne with CO and the imido ligand. These same ferrapyrrolinone complexes also form when H2Fe3(μ3-NPh)(CO)9 is allowed to react with PhC≡CPh, EtC≡CEt, and PhC≡CMe. The derivative formed from PhC≡CMe was found to undergo subsequent substitution of one CO ligand by ButN≡C to form Fe2(μ2-η3-PhC=C(Me)C(O)NPh)(CO) 5(CNBut), which was crystallographically characterized. The bis(imido) cluster Ru3(μ3-NPh)2(CO)9 reacts with PhC≡CPh to form the tetranuclear cluster Ru4(μ3-NPh)2(η2-μ 2-PhC≡CPh)(CO)10, which has been crystallographically shown to possess a butterfly arrangement of the four ruthenium atoms with the alkyne bridging the hinge of the butterfly in a perpendicular fashion and with the imido ligands bridging the open triangular faces of the butterfly. The analogous triiron cluster Fe3(μ3-NPh)2(CO)9 reacts with PhC≡CPh to give a mixture of products, from which the ferracyclopentadiene Fe2(μ2-η4-PhC=C(Ph)C(Ph)=CPh)(CO) 6 and the binuclear ferraazetine complex Fe2(μ2-η3-PhC=C(Ph)NPh)(CO)6 were characterized. The latter compound possesses a four-membered metallacycle formed by coupling of the alkyne with the imido ligand. Treatment of H2Ru3(μ3-NPh)(CO)9 with PhC≡CPh results in the formation of the cluster Ru4(μ4-NPh)(μ4-η 2-PhC≡CPh)(CO)11, which has been crystallographically shown to possess a planar arrangement of the four ruthenium atoms bridged on one side by the μ4-imido ligand and the other by the alkyne. The cluster Fe3(μ3-NPh)(CO)10 has also been found to react with 1,3-cyclohexadiene and with allene to respectively form the trinuclear clusters Fe3(μ3-NPh)(CO)8(η 4-1,3-cyclohexadiene) and Fe3(μ3-NPh)(CO)8(μ2-η 6-C6H8). Crystallographic characterization has shown that in the former the diene has replaced two CO's and is coordinated to a single iron atom whereas in the latter two allenes have coupled through their central carbon atoms to form a C6H8 ligand that bridges two iron atoms with each C3H4 unit of the ligand η3-bonded to a single iron.