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• W2167472341 abstract "Photochemical reactions of technetiumtricarbonyl compounds with neutral phosphorous donor ligands are reported. (C5Me5)Tc(CO)3 and (C5H5)Tc(CO)3 react with triphenylphosphane to yield (C5Me5)Tc(CO)2(PPh3) (3) and (C5H5)Tc(CO)2(PPh3) (4) respectively. 3 and 4 have been isolated and their molecular and crystal structures were determined by single-crystal X-ray diffraction. The crystal structures of the yellow compounds 3 (monoclinic) and 4 (triclinic) are discussed together with their spectroscopic data and are compared with the also determined structure of the homologous rhenium compound (C5Me5)Re(CO)2(PPh3) (3a). Thermal in-situ reaction of irradiated HB(3,5-Me2C3HN2)Tc(CO)3 with trimethylphosphite (TMP) yields HB(3,5-Me2C3HN2)Tc(CO)2(TMP) (7). The crystal and molecular structure of 7 was determined and and is discussed in comparison with the determined structures of the homologous compounds HB(3,5-Me2C3HN2)Re(CO)2(TMP) (7a), and HB(3,5-Me2C3HN2)Mn(CO)2(TMP) (7b). The intermediate Re-compound HB(3,5-Me2C3HN2)Re(CO)2(THF) (8a) has been also isolated and characterized. Wir berichten erstmals über die photolytische Umsetzung von Technetiumtricarbonylverbindungen mit phosphorhaltigen, neutralen Donorliganden. Aus der photochemischen Reaktion von (C5Me5)Tc(CO)3 und (C5H5)Tc(CO)3 mit Triphenylphosphan konnten (C5Me5)Tc(CO)2(PPh3) (3a) und (C5H5)Tc(CO)2(PPh3) (4) isoliert werden. Ihre Molekül- und Kristallstruktur wurde durch Röntgenstrukturanalyse an Einkristallen ermittelt. Die Strukturen werden in Korrelation mit spektroskopischen Daten und in Vergleich mit der erstmals ermittelten Struktur der bekannten Re-homologen Verbindung [19] (C5Me5)Re(CO)2(PPh3) (3a) diskutiert. Weiter berichten wir über Bestrahlungen der Komplexe HB(C3H3N2)Tc(CO)3 und HB(3,5-Me2C3HN2)Tc(CO)3 in THF und anschlieβende thermischer in-situ Reaktion mit Triphenylphosphan (PPh3) bzw. Trimethylphosphit (TMP). Die Molekül- und Kristallstruktur der Verbindung Hb(3,5-Me2C3HN2)Tc(CO)2(TMP) (7) wurde zusammen mit denen der homologen Verbindungen HB(3,5-Me2C3HN2)Re(CO)2(TMP) (7a) und HB(3,5-Me2C3NH2)Mn(CO)2(TMP) (7b) ermittelt und beschrieben. Im Fall des Rheniums konnten wir schlieβlich die wichtige Zwischenverbindung HB(3,5-Me2C3HN2)Re(CO)2(THF) (8a) isolieren und eindeutig charakterisieren." @default.
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• W2167472341 date "1995-05-01" @default.
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• W2167472341 title "Metallorganische chemie des technetiums XII. Photolytische CO-substitutionsreaktionen von technetiumtricarbonylverbindungen. Synthesen und Röntgenstrukturanalysen von (C5H5)Tc(CO)3(PPh3), (C5Me5)Tc(CO)2(PPh3) und [HB(3,5-Me2 Pz)3Tc(CO) 2[P(OMe)3] im Vergleich mit seinen Homologen" @default.
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• W2167472341 doi "https://doi.org/10.1016/0022-328x(94)05270-l" @default.
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