Syntheses, structures and reactivity of η6-arene-η5-2,3-dihydro-diborolyl-rhodium complexes
摘要:
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.
Synthese und Struktur von benzylsubstituierten Derivaten des Dinickel-Tripeldeckerkomplexes μ-η5,η5(2,3–Dihydro–1,3-diborolyl)-(η3–allyl)(η4–1,5–hexadien) dinickel / Synthesis and Structure of Benzyl Dinickel Triple-Decker 络合物 μ–η5, η5–(2 ,3–Dihydro–1,3 -diborolyl)– (η3–allyl)(η4– 1,5 -hexadiene)dinickel 的取代衍生物