- 作者: Maw-Cherng Suen, Shih-Fu Chiang, Jhy-Der Chen, Shuenn-Shing Chern and Chwan-Deng Hsiao
- 中文摘要: The quadruply bonded complexes containing bridging acetate and polydentate phosphine ligands of the type Mo2(O2CCR3)X3(η3-etp) (R = H, X = Br, 1; R = F, X = Cl, 2; R = F, X = Br, 3; etp = Ph2PCH2CH2P(Ph)CH2CH2PPh2) were prepared by reactions of MO2(O2CCR3)X2(PPh3)2 with etp in CH2X2. Their UV-vis and 31P{1H}-NMR spectra have been recorded, and the structure of 1 has been determined by X-ray crystallography. Crystal data for 1.2CH2Br2: space group P2 1/c, a = 13.924(7) A, b = 21.157(4) A, c = 14.427(5) A, β= 101.82(3)°, V = 4159(2) A3, Z = 4, with final residuals R = 0.0797 and Rw = 0.0793. The absorption wavelengths of the δ→δ* transitions and the chemical shifts and the coupling constants of the 31P{1H}-NMR spectra of these complexes are dependent on the natures of the halogen atoms and the acetate ligands.
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