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Hou, Z.; Wakatsuki, Y., Science of Synthesis, (2003) 2, 919.
The metathetical reaction between bis(tetrahydrofuran)samarium(II) iodide and 1 equivalent of K2C8H8 in tetrahydrofuran leads to formation of the tetrahydrofuran-insoluble neutral bis(cyclooctatetraenyl)samarium(II) complex, Sm(C8H8).[405] When 2 equivalents of K2C8H8 are used in this reaction, the tetrahydrofuran-soluble potassium salt complex [K2Sm(C8H8)2] is formed.[405] The metathetical reactions between mono(pentaalkylcyclopentadienyl)samarium(II) iodides and cyclooctatetraenyldipotassium in toluene give the triple-decked cyclooctatetraenyl–pentaalkylcyclopentadienyl samarium(II) complexes 168 (Ln = Sm; R1 = Me, Et) (Scheme 112).[406] In this synthesis, the use of the isolated mono(pentaalkylcyclopentadienyl)samarium(II) iodides (see Section 2.12.4.1) may not be necessarily required, as the reaction of bis(tetrahydrofuran)ytterbium(II) iodide with (pentamethylcyclopentadienyl)potassium and cyclooctatetraenyldipotassium in a molar ratio of 2:2:1 gives the analogous ytterbium(II) complex 168 (Ln = Yb; R1 = Me) in high yield (Scheme 112).[407] The tetrahydrofuran solvates in 168 can be easily removed under vacuum to give the unsolvated complexes 169.[406,407] An analogous europium(II) complex, [{EuCp*(THF)2}2(cot)], has been prepared by reaction of europium(III) chloride with cyclooctatetraenyldipotassium and (pentamethylcyclopentadienyl)potassium, a process which is accompanied by reduction of europium(III) to europium(II).[408]
Meeeee 888 Meeeeeeee ee Meeeee-Meeeee Meeeeeeeeeee(MM) Meeeeeeee eeee Meeee Meeeeeeeeeeeeeeeee–Meeeeeeeeeeeeeee Meeeeee[888,888]
Mee eeeeeeeee eeee eeeee eeeeeeee eeeeeeeee 888 eeee e eeeeeeeeeeeeeeeeee eeeeee eee ee eeeeeeee ee eee eeeeeeeee ee eeeeeeeeee(MMM) eeeeeeeee eeee 8 eeeeeeeeee ee eeeeeeeeeeeeeeeeeeeeeeeeeeeee ee eeeeeeeeeeeeeee, ee eeeee ee Meeeee 888.[888–888] Meeeeeee eee eeeeeee eeeeeeee eeeeeeeee eeee eee eeeeeeeeeeeeee-eeeeeeeeeee eeeeeeeeeeeeeeeeee eeeeee [8,8-(MMM)8M8M8]8− eeee eeee eeee eeeeeeee eeeeeeeeeee ee eeeeeeee ee eeee(eeeeeeeeeeeeeee)eeeeeeeeee(MMM) eeeeeeeee (Me = Me, M) eeee Me8[8,8-(MMM)8M8M8].[888] Mee eee ee eeeeeeeeee(MMM) eeeeeeeee (Me = M, Me, Me, Me, Me) ee eeeee ee eeeeeeeeee(MMM) eeeeeeeee ee eee eeeeeeeee eeee eeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeee eee eeeeeeeee eeeeeeee eeeeeeeee [Me(μ-M8MMM8)(eee)(MMM)e]8 (e = 8, 8).[888,888]
Meeeee 888 Meeeeeeee ee Meee(eeeeeeeeeeeeeeeeee) Meee Meeee Meeeeeee Meeeeeeee[888–888]
Mee eeeeeeeeeeee eeeeeeee ee eee eeeeeeee 888 (Me = Me) eeee MeM8 (M8 = MM8MMM ee 8-Me8MMM8M8M8) eeeeee eee eeeeee eeeeeeeee 888 (Meeeee 888).[888,888] Meeeeee eeeeeeeeee ee 888 (Me = M, Me, Me) eeee MeMM(MMM)8 eeee eee eeee ee eee eeeeeeee eeeeeee σ-eeeee eeeeeeeee, eee eeeeeee eeeee eee eeeeeee eeeeeeee eeeeeeeee [Me{MM(MMM)8(μ-η8,η8-eee)Me(MMM)8}].[888] Mee eeeeeeee ee 888 (Me = M, Me, Me, Me) eeee 8 eeeeeeeeee ee eeeeee eeeeeeeeeeeeeeeeeeeeee eeeeee eeeeeeeeeeeeeeeee eee eeeee eeeeeeeee 888 (Meeeee 888),[888] eeeee ee eee eeee ee Me ee eeeeeee eeeeeeee eeeeeee, {(MMM)8M}8Me(μ-η8-eee)Me{M(MMM)8}, ee eeeeeeee eeeee eee eeee eeeeeeeeee.[888]
Meeeee 888 Meeeeeeee ee Meee(eeeeeeeeeeeeeeeeee) Meee Meeee Meeeee eee Meeee Meeeeeeee[888,888,888]
Mee eeeeeeeee ee 888 eeee 8 eeeeeeeeee ee (eeeeeeeeeeeeeeeeeeeeeeeeeee)eeeeee ee (8,8-eeeeeeeeeeeeeeeeeee)eeeeeeeee eeee eee eeeee-eeeeee eeeeeeeee 888 ee 888, eeeeeeeeeeee (Meeeee 888).[888,888] Meeeeee eeeeeeeeee ee eeee(eeeeeeeeeeeeeeeeee) eeee eeeee eeeeeeeee eeee eeeee eeeeeee eeeeeee eeee ee eeeeeeeeeeeeeeeee,[888,888–888] eeeeeee,[888] eeeeeeeee,[888] eeeeeeeeeeeeeeee,[888] eee eeeeeeeeeee[888] eeee eeee eeee eeeeeeee.
Meeeee 888 Meeeeeeee ee Meee Meeee Meeeeeeee eeee Meeee Meeeeeeeeeeeeeeeee–Meeeeeeeeeeeeeeeeeeeeeeeeee ee –Meeeeeeeeeeee-8,8-eeeeee Meeeeee[888,888]
Meee 8 eeeeeeeeeee ee (eeeeeeeeeeeeeeeeee)eeeeeeeeeee ee eeee eeee eeeeeeeeee(MMM) eeeeeeeee, eee eeeeeeeeeee eeeeeeee eeeeeeeee 888 eeeeeeeeee [Me(M8M8)8]− eeee eee eeeeee (Meeeee 888).[888,888] Mee eeeeeeeee ee eeeeeeeee eeeeeeeee eeeeeee eeeeeeee eeeeeeeeeeeeeeeeee eeeeeee ee eeeeeee eeeeeeeeee eee eeee eeee eeeeeeee.[888,888–888]
Meeeee 888 Meeeeeeee ee Mee(eeeeeeeeeeeeeeeeee) Meee Meeee Meeeeeeee[888,888]
Meeeeeeeeeee Meeeeeeee
Me-μ-eeeeeeeee(η8-eeeeeeeee-8,8,8,8-eeeeeeee)eeeeeeee(eeeeeeeeeeeeeee)eeeeeeee(MMM) (888, Me = Me):[888,888]
Me e eeeeeeee, e eeee ee M8M8M8, eeeeeee eeeeeeee ee eeeeeeee ee M8M8 (8.88 e, 8.888 eee) eeee eeeeeeee M (8.88 e, 8.888 eee) ee MMM (888 eM) ee −88 ee −8°M (8 e), eee eeeeee eeeee ee e eeeeeee eeeeeeeeee ee eeeee MeMe8 (8.88 e, 8.888 eee) ee MMM (88 eM) ee ee. Mee eeeeeeeee eeeeee-eeeee eeeeeee eee eeeeeee ee ee eee 88 e. Mee eeeee eeeeeeee eeee eeeeeeee eee eeeeeeeee eeeeeeee ee eeeeeee ee eee eeeeeee ee eeeee eeeeeeee ee MMM eeeeeeeeee ee eeeeee eeeeeee eeeeeeeeee (eeee ee M[Me(M8M8)8]). Meeee eeeeeeeeeeee eee eeeeeeee ee Meeeeee eeeeeeeeee ee eee eeeeeee eeee MMM eee 88 e. Meeeee eeeeeeeeee ee eee Meeeeee eeeeeeee eeee eeeeeee eee eeeeeeeee ee eeee, eeeeeeeeeeeeeeee eeeeeee; eeeee: 88.88 e (88%).
References
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| [403] | Meeeeeee, M. M., Meeee. Meee., (8888) 888, 8888; Meeee. Meee. Mee. Me. Meee., (8888) 88, 8888. |
| [405] | Meeee, M. M.; Meeee, M.; Meeeeee, M., M. Meeeeeeee. Meee., (8888) 888, M88. |
| [406] | Meeee, M. M.; Meeee, M. M.; Meeeee, M. M.; Meeeee, M. M., M. Me. Meee. Mee., (8888) 888, 8888. |
| [407] | Meeee, M. M.; Meeeeeee, M. M.; Meeee, M. M.; Meeeee, M. M., Meeeeeeeeeeeeee, (8888) 88, 8888. |
| [408] | Meeee, M. M.; Meeeeee, M. M.; Meeeee, M. M., Meeeeeeeee, (8888) 88, 8888. |
| [409] | Meeeeee, M. M.; Meeee, M.; Meeeee, M. M.; Meeeeeeeeeee, M., Me., M. Me. Meee. Mee., (8888) 88, 8888. |
| [410] | Meeee, M. M., Meeeeeeeeeeeeee, (8888) 8, 888. |
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| [412] | Meeeee, M. M.; Meeee, M. M. M.; Meeeeeeee, M. M.; ee Meeee, M. M.; Meeee, M. M., M. Meee. Mee., Meee. Meeeee., (8888), 8888. |
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| [414] | Meeeeeee, M.; Meeäeee, M.; Meeeee-Meeee, M.; Meeeeeee, M. M., M. Meeeeeeee. Meee., (8888) 888, M88. |
| [415] | Meeee, M. M.; Meeeee, M. M., Meeeeeeeeeeeeee, (8888) 8, 8888. |
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| [419] | Meeeeeeee, M.; ee Meeeee Meeeee, M. M., M. Meeeeeeee. Meee., (8888) 888, 888. |
| [420] | Mee, M.; Mee, M.; Meee, M., M. Meee. Mee., Meee. Meeeee., (8888), 888. |
| [421] | Meeeeeee, M.; Meeeee, M.; Möee, M. M.; Meeeee, M.; Meeeeeee, M., M. Meeeeeeee. Meee., (8888) 888, 888. |
| [422] | Meeeeeee, M.; Meeeeeeeee, M.; Möee, M. M.; Meeee, M.; Mee, M.; Meeeeeee, M., Meee. Mee., (8888) 888, 888. |
| [423] | Meeeeeeeee-Meeeeeeee, M. M.; Meeeeeee, M.; Meeee, M.; Meeeeeeeeeee, M., Meeeeeeeeeeeeee, (8888) 88, 888. |
| [424] | Meeeeee, M. M.; Meeeeeeee, M. M.; Meeeeee, M.; Meeeeeeeeeee, M.; Meeeee, M., Meeeeeeeeeeeeee, (8888) 88, 8888. |
| [425] | Meeeeee, M.; Meeeeeeee, M.; Meeeeeeeee, M.; Meeeeee, M.-M.; Meüeee, M.; Meeeeeee, M. M., M. Meeeeeeee. Meee., (8888) 888, 8. |
| [426] | Meeeee, M. M.; Meeeee, M. M., Meeeeeeeeeeeeee, (8888) 88, 8888. |
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