Organorhenium(VII) oxides such as methyltrioxorhenium(VII) (1) and its longer-chain alkyl derivatives form 1:1 and 1:2 adducts with nitrogen-donor Lewis bases. These compounds adopt well-defined structures in the solid state. In solution, they undergo exchange of both the metal-coordinated base ligands and the oxo ligands. The synthesis and crystal structure (X-ray diffraction study) of the amino-functionalized complex i-1 C^Re-CHaCHaCHaNÍCsHio) (3a) is reported. Crystal data are as follows: monoclinic, space group Fife, a = 8.327(2) Á, b = 11.516(1) Á, c = 10.864(2) Á, ß = 101.54(7)°, R = 0.028 for 1747 reflections. Compounds of type 3a are intramolecular base adducts in the solid state, but rigid geometries in solution can only be observed at low temperatures.
RIENER, K.; HASLINGER, S.; RABA, A.; HOEGERL, M. P.; COKOJA, M.; HERRMANN, W. A.; KUEHN, F. E.; Chem. Rev. (Washington, DC, U. S.) 114 (2014) 10, 5215-5272, http://dx.
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