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Photochemical reactions of technetiumtricarbonyl compounds with neutral phosphorous donor ligands are reported. (C(5)Me(5)) Tc (CO)(3) and (C(5)H(5)) Tc(CO)(3) react with triphenylphosphane to yield (C(5)Me(5)) Tc (CO)(2) (PPh(3)) (3) and (C(5)H(5)) Tc (CO)(2) (PPh(3)) (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 structure of the homologous rhenium compound (C(5)Me(5)) Re(CO)(2) (PPh(3)) (3a) which was also determined. Thermal in situ reaction of irradiated HB (3,5-Me(2) C(3) HN(2)) Tc (CO)(3) with trimethylphosphite (TMP) yields HB (3,5-Me(2) C(3) HN(2)) Tc (CO)(2) (TMP) (7). The crystal and molecular structure of 7 was determined and is discussed in comparison with the determined structures of the homologous compounds HB (3,5-Me(2) C(3) HN(2)) Re (CO)(2) (TMP) (7a), and HB (3,5-Me(2) C(3) HN(2)) Mn (CO)(2) (TMP) (7b). The intermediate Re-compound HB (3,5-Me(2) C(3) HN (2)) Re (CO)(2) (THF) (8a) has been also isolated and characterized.

Additional information

Authors: JOACHIM J A ET AL, Forschungszentrum Karlsruhe (DE);APOSTOLIDIS C ET AL, JRC Karlsruhe (DE);NUBER B, Anorganisch Chemisches Institut der Universität, Heidelberg (DE);RAPTIS K, Kernforschungszentrum Karlsruhe, Institut für Radiochemie (DE);ZIEGLER M L,
Bibliographic Reference: Article: Journal of Organometallic Chemistry, Vol. 492 (1995), pp. 199-210
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