Reactions of the Re(CO)3(H2O)3+ Synthon with Monodentate Ligands under Aqueous Conditions
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- 作者：Brenton R. Franklin ; Richard S. Herrick ; Christopher J. Ziegler ; Anı ; l Ç ; etin ; Natalie Barone ; Laura R. Condon
- 刊名：Inorganic Chemistry
- 出版年：2008
- 出版时间：July 7, 2008
- 年：2008
- 卷：47
- 期：13
- 页码：5902 - 5909
- 全文大小：1570K
- 年卷期：v.47,no.13(July 7, 2008)
- ISSN：1520-510X
文摘
The reactions of ammonia, pyridine (py), N-methyl imidazole (N-MeIm), tetrahydrothiophene (tht), and piperidine (pip) with Re(CO)3(H2O)3+, 1+, were investigated employing aqueous conditions under atmospheric dioxygen. The reaction of [1]Br in aqueous ammonia led to [Re(CO)3(NH3)3]Br ([2]Br) as the only product isolated. For the aqueous reactions of [1]Br with py, N-MeIm, and tht, mixtures of products are formed because of competition between the bromide and added ligand, even when the ligand is present in excess. Substitution of the PF6− anion for Br− leads to the clean formation of [Re(CO)3L3][PF6] ([3][PF6]−[5][PF6]) for py, N-MeIm, and tht, respectively, as the only products observed. Reaction of [1][PF6] with pip produces the dimeric species, (pip)(CO)3Re(µ-OH)2Re(CO)3(pip), 6. Reactions of [1]Br were also performed in methanol for comparison purposes. The reaction with pip in this solvent led to the analogous dimer, (pip)(CO)3Re(µ-OMe)2Re(CO)3(pip), 7; however, reactions with py, N-MeIm, and tht gave Re(CO)3L2Br, 8−10, respectively, as the only products. The crystal structures of compounds [2]Br−10 are reported.