- 作者: 陳志德
- 作者服務機構: Department of Chemistry, Chung-Yuan Christian University, Chung-Li, Taiwan, R.O.C.
- 中文摘要: By reactions of Mo2(O2CPrn)X2(PPh3)2 (X = Cl, 1; X = Br, 2) with Ph2PCH2CH2P(Ph)CH2CH2PPh2 (etp) in CH2X2, the quadruply bonded complexes containing bridging butyrate and tridentate phosphine ligands of the type Mo2(O2CPrn)X3(h3-etp) (X = Cl, 3; X = Br, 4) were prepared. Their UV-vis and 31P{1H}-NMR spectra have been recorded and the structures of 1 and 2 have been determined by X-ray crystallography. Crystal data for 1: space group P21/c, a = 9.708 (2) A, b = 18.491 (4) A, c = 12.688 (3) A, b = 110.76 (3)°, V = 2130 A3, Z = 2, with final residuals R = 0.0441 and Rw = 0.0519. Crystal data for 2: space group P21/c, a = 9.737 (1) A, b = 18.632 (1) A, c = 12.680 (1) A, b = 110.27 (1)°, V = 2158.2 (3) A3, Z = 2, with final residuals R = 0.0322 and Rw = 0.0481. The d R d* transition energies, 31P{1H}-NMR chemical shifts and the coupling constants are dependent on the natures of the halogen atoms and the carboxylate ligands. The through metal-metal couplings |3JP-Mo-Mo-P| for complexes of the type Mo2(O2CR)X3(h3-P3), which contain h3-polydentate phosphine ligands are about 20 ± 2 Hz.
- 英文摘要: --
- 中文關鍵字: Dimolybdenum complex; Phosphine ligand; X-ray; NMR; Absorption spectrum.
- 英文關鍵字: Dimolybdenum complex; Phosphine ligand; X-ray; NMR; Absorption spectrum.