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- W2028906940 abstract "The chiral complexes [PtMe{cis-1-(NCHC6H4)-2-(NCHPh)C6H10}], 1, and [PtMe{trans-1-(NCHC6H4)-2-(NCHPh)C6H10}], 2, react with protic acids HBF4 or [H(OEt2)2][BAr4] (Ar = 3,5-(CF3)2C6H3) in the presence of olefin, with loss of methane, to give complexes of the type [Pt(η2-CH2CHR){cis/trans-1-(NCHC6H4)-2-(NCHPh)C6H10}][BX4] (R = H, Me, Ph, 4-Me-C6H4; X = F, Ar). For prochiral olefins, R = Me, Ph, and 4-Me-C6H4, highly stereoselective (90−95%) olefin coordination was demonstrated by using 1H and 13C NMR spectroscopy, and for the complex [Pt(η2-CH2CHPh){cis-1-(NCHC6H4)-2-(NCHPh)C6H10}][BF4] by an X-ray structure determination. Olefin dissociation from [Pt(η2-CH2CHPh){trans-1-(NCHC6H4)-2-(NCHPh)C6H10}][BAr4] occurred in CD2Cl2 to give the dinuclear complex [Pt2(μ-Cl){trans-1-(NCHC6H4)-2-(NCHPh)C6H10}2][BAr4], and hydrolysis of [Pt(h2-CH2CH−C6H4-4-Me){trans-1-(NCHC6H4)-2-(NCHPh)C6H10}][BF4] gave PhCHO and [Pt(η2-CH2CH−C6H4-4-Me){trans-1-(NCHC6H4)-2-(NH2)C6H10}][BF4]. These are useful model compounds for intermediates in stereoselective alkene polymerization since they contain mutually cis alkenes and M−C σ-bonds." @default.
- W2028906940 created "2016-06-24" @default.
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- W2028906940 date "2000-10-12" @default.
- W2028906940 modified "2023-09-24" @default.
- W2028906940 title "Stereoselective Coordination of Prochiral Olefins to Asymmetric Platinum(II) Complexes and a Diplatinum(II) Complex with a Single Unsupported Halide Bridge" @default.
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- W2028906940 doi "https://doi.org/10.1021/om0005194" @default.
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