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• W2033337265 abstract "YCl3, SmCl3, LuCl3, and YbI2 react with the lithium, sodium, and potassium salts of 1-(but-3-enyl)-2,3,4,5-tetramethylcyclopentadiene, yielding [(CH2CHCH2CH2C5Me4)2LnCl]2 (Ln = Y (3a), Sm (3b), Lu (3c)) and (CH2CHCH2CH2C5Me4)2Yb (6), respectively. The monomeric THF adducts (CH2CHCH2CH2C5Me4)2LnCl(THF) (Ln = Y (2a), Sm (2b)) crystallize from hexane. Li[C5Me4CH2CH2CH2CHCH2] reacts with SmCl3, yielding (CH2CHCH2CH2CH2C5Me4)2SmCl(THF) (5b). The reaction of YCl3, SmCl3, and LuCl3 with 1 equiv of M[C5Me4CH2CH2CHCH2] followed by M[C5Me5] (M = Na, K) gives [(CH2CHCH2CH2C5Me4)(C5Me5)LnCl]2 (Ln = Y (9a), Sm (9b), Lu (9c)). The NaCl adduct (CH2CHCH2CH2C5Me4)(C5Me5)Y(μ-Cl)2Na(Et2O)2 (8a) crystallizes from Et2O. The cyclopentadienyllanthanide halides 3a,b and 9b react with LiMe, LiCH(SiMe3)2, and LiN(SiMe3)2, forming the corresponding unstable alkyl derivatives (CH2CHCH2CH2C5Me4)2LnR (Ln = Y, R = Me (10a), CH(SiMe3)2 (11a); Ln = Sm, R = CH(SiMe3)2 (11b)), and (CH2CHCH2CH2C5Me4)(C5Me5)YCH(SiMe3)2 (12a), as well as (CH2CHCH2CH2C5Me4)2SmN(SiMe3)2 (13b). 10a, 11a,b, and 12a have been characterized by mass spectrometry, whereas all data of 13b have been obtained. The trichlorides of Y, Sm, and Lu react with 2 equiv of the sodium and potassium salts of 1-(4-methylpent-3-enyl)-2,3,4,5-tetramethylcyclopentadiene, yielding [(Me2CCHCH2CH2C5Me4)2LnCl]2 (Ln = Y (15a), Sm (15b), Lu (15c)) or with 1 equiv of M[C5Me4CH2CH2CHCMe2] followed by M[C5Me5] (M = Na, K), yielding [(Me2CCHCH2CH2C5Me4)(C5Me5)LnCl]2 (Ln = Y (17a), Sm (17b), Lu (17c)). The monomeric NaCl adduct (Me2CCHCH2CH2C5Me4)(C5Me5)Lu(μ-Cl)2Na(OEt2)2 (16c) crystallizes from Et2O. The structures of 2a,b, 8a, 13b, and 16c were determined by single-crystal X-ray diffraction." @default.
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• W2033337265 date "2002-06-29" @default.
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• W2033337265 title "Organometallic Compounds of the Lanthanides. 156.¹ ω-Alkenyl-Functionalized Cyclopentadienyl Complexes of Yttrium, Samarium, Ytterbium, and Lutetium" @default.
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• W2033337265 doi "https://doi.org/10.1021/om020138l" @default.
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