Synthesis, Structural Characterization, and MO Calculations of Vanadium Imido Complexes Containing Bidentate Phosphine Coligands
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- 作者：Francisco Montilla ; Angeles Monge ; Enrique Gutié ; rrez-Puebla ; Antonio Pastor ; Diego del Rí ; o ; Norge Cruz Herná ; ndez ; Javier Ferná ; ndez Sanz ; and Agustí ; n Galindo
- 刊名：Inorganic Chemistry
- 出版年：1999
- 出版时间：October 4, 1999
- 年：1999
- 卷：38
- 期：20
- 页码：4462 - 4466
- 全文大小：132K
- 年卷期：v.38,no.20(October 4, 1999)
- ISSN：1520-510X
文摘
Treatment of complex V(N-2,6-iPr2C6H3)Cl3 with 1,2-dimethoxyethane (dme) gives in quasi-quantitative yieldthe adduct V(N-2,6-iPr2C6H3)Cl3(dme) (1). Interaction of 1 with bidentate phosphines gives V(N-2,6-iPr2C6H3)Cl3(P-P) (P-P = depe, 2a; dppe, 2b) compounds. An X-ray analysis (monoclinic, space group P21/c, a = 14.7387(14) Å, b = 10.6738(10) Å, c = 16.999(3) Å, 
= 90.954(2)
, Z = 4, R = 0.0544), carried out on complex 2a,shows a mer arrangement of the chloride ligands and a nonsymmetrical coordination of the diphosphine ligand.One of the phosphorus atoms occupies the trans position with respect to the organoimido ligand. MO calculationson the models V(NR)Cl3(H2PCH2CH2PH2) (R = H, C6H5) of complex 2a were performed. The mer isomer,which is more stable than the fac isomer, shows good agreement with the experimental data.
= 90.954(2), Z = 4, R = 0.0544), carried out on complex 2a,shows a mer arrangement of the chloride ligands and a nonsymmetrical coordination of the diphosphine ligand.One of the phosphorus atoms occupies the trans position with respect to the organoimido ligand. MO calculationson the models V(NR)Cl3(H2PCH2CH2PH2) (R = H, C6H5) of complex 2a were performed. The mer isomer,which is more stable than the fac isomer, shows good agreement with the experimental data.