ditechnetium decacarbonyl | 78498-97-2

• 英文名称: ditechnetium decacarbonyl
• CAS: 78498-97-2
• 化学式: C₁₀O₁₀Tc₂
• 分子量: 478.104
• InChiKey: VCYMQIWVZLSQAD-KPVLRUHTSA-N

物化性质

• 密度：
  2.11 g/cm3

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  ditechnetium decacarbonyl 在 iodine 、 carbon monoxide 作用下， 以 四氢呋喃 为溶剂， 以90%的产率得到
  参考文献：
  名称：

  Castro, H. H. Knight; Meetsma, A.; Teuben, J. H., Journal of Organometallic Chemistry, 1991, vol. 410, p. 63 - 72

  摘要：

  DOI：
• 作为产物：
  描述：

  ammonium [(99)Tc]pertechnate 在 sodium amalgam 、 carbon monoxide 作用下， 以 四氢呋喃 为溶剂， 以70%的产率得到ditechnetium decacarbonyl
  参考文献：
  名称：

  Castro, H. H. Knight; Meetsma, A.; Teuben, J. H., Journal of Organometallic Chemistry, 1991, vol. 410, p. 63 - 72

  摘要：

  DOI：

文献信息

• Some new cationic di- and tricarbonyl complexes of technetium(I)
  作者：H. H. Knight Castro、C. E. Hissink、J. H. Teuben、W. Vaalburg、K. Panek

  DOI：10.1002/recl.19921110208

  日期：——

  Some new low-valent, cationic complexes of technetium-99 have been prepared. Oxidation of Tc2(CO)10 (1) with NOPF6 in acetonitrile gave [Tc(CH3CN)(CO)5]PF6 (2) quantitatively. This complex constitutes a useful precursor for cationic carbonyl complexes, as exemplified by a variety of reactions with bi- and tridentate ligands from which air-stable, water-soluble complexes of type [LTc(CO)3]+ (L = 1,4

  Some new low-valent, cationic complexes of technetium-99 have been prepared. Oxidation of Tc2(CO)10 (1) with NOPF6 in acetonitrile gave [Tc(CH3CN)(CO)5]PF6 (2) quantitatively. This complex constitutes a useful precursor for cationic carbonyl complexes, as exemplified by a variety of reactions with bi- and tridentate ligands from which air-stable, water-soluble complexes of type [LTc(CO)3]+（L ＝ 1,4
• C−H Bond Activation of Coordinated Pyridine: Ortho-Pyridyl-Ditechnetiumhydridocarbonyl Metal Cyclus. Crystal Structure and Dynamic Behavior in Solution
  作者：Maaz Zuhayra、Ulf Lützen、Arne Lützen、Laszlo Papp、Eberhard Henze、Gernot Friedrichs、Franz Oberdorfer

  DOI：10.1021/ic8015063

  日期：2008.11.3

  The reaction of pyridine with ditechnetium decacarbonyl [Tc-2(CO)(10)] (1) leads to a novel ortho-pyridyl-ditechnetium hydrido complex, [Tc-2(mu-H)(mu-NC5H4)(Nc(5)H(5))(2)(CO)(6)] (2) and its precursor [Tc-2(mu-CO)(2)(NC5H5)(2)(CO)(6)] (3). At ambient temperature 1 was found to react slowly with pyridine to afford the substitution product 3 after 120 h. However, heating the reaction mixture to reflux exclusively leads to the pyridine-ortho-metalated complex 2 in only 30 min. Similarly, complex 3 can be converted completely into 2 upon heating in pyridine for 30 min. Both compounds 2 and 3 were characterized by NMR spectroscopy and X-ray analysis. Both compounds 2 and 3 show a complex dynamic behavior in solution that was investigated by one-dimensional and two-dimensional NMR spectroscopy. Both compounds 2 and 3 show isomerization in solution according to the relative position of the non-bridging pyridine ligands. For 2 the existence of three isomers was shown at equilibrium conditions, 2a (56%) with transdiaxial, 2b (38%) with cis-diaxial, and 2c (6%) with axial-equatorial arrangement of the non-bridging pyridines. For 3 an equilibrium was detected between two isomers, 3a (67%) with a cis-diaxial and 3b (33%) with a transdiaxial arrangement of the pyridines.