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• W2002196887 abstract "The reactions of Os3(CO)11(MeCN) with 1-vinylimidazole, imidazole and pyrazole (L-H) result in the formation of Os3(CO)11(L-H) (1, L-H = 1-vinylimidazole; 2, L-H = imidazole; 3, L-H = pyrazole) in good yields. Thermolysis of these complexes at 98°C gives two separable isomers of (μ-H)Os3(CO)10(μ-L). In the case of 1 and 2, these isomers are formed by the activation of the two CH bonds adjacent to the imino nitrogen atom whereas for 3 they are formed by either a CH or a NH activation. These isomers interconvert at 128°C. The reaction of Ru3(CO)12 with 1-vinyl-imidazole and imidazole in the presence of sodium benzophenone ketyl at 67°C. yields the cyclodimetalled compounds (μ-H)Ru3(CO)10(μ-2, 3-η2-C=NCH=CHNR) (7, R = CH=CH2; 8, R = H) in the same isomeric form as the minor isomers in the osmium series. All the new compounds are characterized by IR, 1H-NMR and elemental analysis together with the X-ray crystal structures f 2 and 7. Compound 2 crystallizes in the monoclinic space group P21/c with unit cell parameters a = 12.81(2)m Å, b = 10.539(2) Å, c = 15.834(2) Å, β = 102.61(2)°, V = 1959(1) Å3 and Z = 4. Least-squares refinement of 3570 reflections gave a final agreement factor of R = 0.0655 (Rw = 0.0728). Compound 7 crystallizes in the monoclinic space group P21/c with unit cell parameters a = 14.665(4) Åb = 7.5311(9) Å, c = 18.291(4) Å, β = 96.14(1)°, V= 2008.5(7) Å3 and Z = 4.; Least-squares refinement of 3042 reflections gave a final agreement factor of R = 0.0407 (Rw = 0.0749)." @default.
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• W2002196887 date "1995-05-01" @default.
• W2002196887 modified "2023-09-27" @default.
• W2002196887 title "Triosmium and triruthenium clusters containing diazaheterocycles" @default.
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• W2002196887 doi "https://doi.org/10.1016/0022-328x(94)05223-x" @default.
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