Portal de Periódicos da CAPES

Rhenium(I) Tellurolate, Telluroether and Bidentate-Telluroether Complexes: Crystal Structures of Re(CO) 3 Br(PhTe(CH 2 ) 3 TePh), PhTeRe(CO) 5 Re 2 (μ-SePh) 2 (CO) 8 and [(PhTeMe)Re(CO) 5 ][BF 4 ]

1995; Wiley; Volume: 42; Issue: 1 Linguagem: Inglês

10.1002/jccs.199500010

2192-6549

Wen‐Feng Liaw, Yih‐Chern Horng, Der‐Shiaw On, Chin‐Yuan Chuang, Chen‐Kang Lee, Gene‐Hsiang Lee, Shie‐Ming Peng,

Organoselenium and organotellurium chemistry

Abstract The monomeric rhenium(I) complex with bidentate telluroether ligand Re(CO) 3 Br(PhTe(CH 2 ) 3 TePh) (1) was accessible via reaction of the PhTe(CH 2 ) 3 TePh with Re(CO) 5 Br. This chelate complex crystallized in triclinic space group \documentclass{article}\pagestyle{empty}\begin{document}$ {\rm P}\bar 1 $\end{document} with a = 9.390(5) Å, b = 10.961(3) Å, c = 11.849(4) Å a = 63.30(3)°, β = 87.49(4)° γ = 69.31(4)°, V = 1009.5(7) Å 3 Z = 2, R = 0.033, and R w = 0.034. Reaction of Re(CO) 5 Cl with NaTePh yielded the Re(I) specics PhTeRe(CO) 5 (2). This complex crystallized in triclinic space group \documentclass{article}\pagestyle{empty}\begin{document}$ {\rm P}\bar 1 $\end{document} with a = 7.085(1) Å, b = 9.203(1) Å, c = 11.341(1) Å, α = 107.24(1)°, β = 100.56(1)°, γ = 96.47(1)°, V = 683.2(2) Å 3 , Z = 2, R = 0.027, R w = 0.022. Reaction of PhTeRe(CO) 5 and (PhSe) 2 in THF at 65 °C yielded a product that was confirmed crystallographically to be the known species Re 2 (μ‐SePh) 2 (CO) 8 (3), in which two phenylselenolate ligands bridge the two Re(I). Compound 3 crystallized in monoclinic space group P2 1 /n with a = 7.210(2) Å, b = 18.862(6) Å, c = 9.083(3) Å, β = 107.48(3)° V = 1178.2(7) Å 3 , Z = 2, R = 0.046, and R w = 0.051. Methylation of PhTeRe(CO) 5 with [Me 3 O][BF 4 ] afforded Re(I) product [(PhTeMe)Re(CO) 5 ][BF 4 ] (4). This monodentate telluroether species crystallized in monoclinic space group P2 1 /n with a = 8.405(1) Å, b = 13.438(3) Å, c = 15.560(2) Å, β = 92.59(1)° V = 1755.5(5) Å 3 , Z = 4, R = 0.035, and R w = 0.035.