Syntheses, structures and reactivity of η6-arene-η5-2,3-dihydro-diborolyl-rhodium complexes
作者:Stefan Huck、Achim Ginsberg、Hans Pritzkow、Walter Siebert
DOI:10.1016/s0022-328x(98)00913-9
日期:1998.11
The reactions between dirhodium-mu-dichloro-tetraethylene and the 2,3-dihydro-1,3-diborole derivatives 1a,b in toluene and benzene yield the sandwich complexes 3a-c and 4a,b. Their compositions have been derived from spectroscopic and analytical data and were confirmed by single crystal structure analyses for 3a, b, c and for 4b. On heating, these compounds lose the arene ligand and the remaining complex fragments undergo stacking with formation of triple-decker complexes (6a,b) and a tetradecker complex (7b). Thermogravimetric analyses of 3 and 4 indicate that the decomposition occurs in two steps: the first represents the elimination of the arene and the second the thermal decomposition of the residue. (C) 1998 Elsevier Science S.A. All rights reserved.