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- W1531271720 abstract "Irradiation of W(CO)4[P(CH3)3]2 (OC-6-22) in THF yields W(CO)3[P(CH3)3]2(THF) (OC-6-32) which was treated in situ with nine unsymmetrically substituted olefins (I–IX) with formyl, acetyl or carbomethoxy groups. With methylacrylate (V) the corresponding W(CO)3[P(CH3)3]2(CH2CHCOOCH3 (OC-6-32) (VA) was isolated. The other olefins form directly W(CO)3[P(CH3)3]2(olefin) (OC-6-13) complexes (IB–IVB, VIB–IXB). VA isomerizes thermally to W(CO)3[P(CH3)3]2(CH2 CHCOOCH3) (OC-6-13) (VB). The activation parameters of the hindered olefin rotation in the complexes IB–IXB were determined from their temperature dependent 31P{1H} NMR spectra. The free activation energies of the olefin rotation correlate linearly with the average CO force constants. (OC-6-32), welches mit neun unsymmetrisch mit Formyl-. Acetyloder Carbomethoxygruppen substituierten Olefinen (I–IX) in situ umgesetzt wurde. (OC-6-32) (VA) isolieren. Die anderen Olefine bilden direkt W(CO)3[P(CH3)3]2(olefin)-Komplexe (OC-6-13) (IB–IVB, VIB–IXB). VA isomerisiert thermisch zu W(CO)3[P(CH3)3]2(CH2CHCOOCH3) (OC-6-13) (VB). Die Aktivierungsparameter der gehinderten Olefinrotation in den Komplexen IB–IXB wurden anhand deren temperaturabhängigen 31P{1}H}-NMR-Spektren bestimmt. Die freien Aktivierungsenergien der Olefinrotation korrelieren linear mitden mittleren CO-Kraftkonstanten." @default.
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- W1531271720 date "1982-12-01" @default.
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- W1531271720 title "Gehinderte ligandbewegungen in übergangsmetallkomplexen" @default.
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- W1531271720 doi "https://doi.org/10.1016/s0022-328x(00)93977-9" @default.
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