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- W1523226838 abstract "The reaction of C5H5Rh(CO)(PiPr3) (1] which is prepared from C5H5Rh(CO)2 and neat P1Pr3, with the nitriloxides 2-RC6H4CNO (R H, Cl) leads to the formation of the metallaheterocycles C5H5(P1Pr3)RhC(O) ONC(C6H4R) (2, 3) in 90–95% yield. Compound 1 reacts with tosylazide to give the C,N-bound isocyanate complex C5 H5(PiPr3)Rh(η2-TosNCO) (6). Analogously, on treatment of C5Me5Co(CO)(PMe3) with phenylazide the phenylisocyanate derivative C5Me5(PMe3)Co(η2-PhNCO) (7) is formed. Protonation of 7 with CF3CO 2H affords the non-ionic carbamoylcobalt complex C5Me5(PMe3)Co[C(O)NHPh](O2CCF3) (8). The X-ray structural analysis of 2 reveals the presence of an almost planar RhCONC heterocycle in which the two Rh-C distances differ by 0.045 Å Die Reaktion von C5H5Rh(CO)(PiPr3) (1), das aus C5H5Rh(CO)2 in reinem PiPr3 hergestellt wird, mit den Nitriloxiden 2-RC6H4CNO (R H,Cl) führt zur Bildung der Metallaheterocyclen C5H5(PiPr3)RhC(O)ONC(C6 H4R) (2, 3) in einer Ausbeute von 90–95%. Die Verbindung 1 reagiert mit Tosylazid zu dem C,N-koordinierten Isocyanat-Komplex C5H5(PiPr3)Rh(η2-TosNCO) (6). Auf analoge Weise entsteht durch Einwirkung von Phenylazid auf C5Me 5Co(CO)(PMe3) die Phenylisocyanat-Verbindung C5Me5(PMe3)Co(η2-PhNCO) (7). Die Protonierung von 7 mit CF3CO2H liefert den nicht-ionischen Carbamoylcobalt-Komplex C5Me5(PMe3)Co[C(O)NHPh](O2CCF3) (8). Die Röntgenstrukturanalyse von 2 belegt das Vorliegen eines planaren RhCONC-Heterocyclus, in dem sich die beiden Rh-C-Abstände um 0.045 Å unterscheiden." @default.
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- W1523226838 date "1992-11-01" @default.
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- W1523226838 title "Cycloadditionsreaktionen von Organometall-Komplexen" @default.
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- W1523226838 doi "https://doi.org/10.1016/0022-328x(92)80216-k" @default.
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