ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The Chelates of Ferrocenecarbaldehyde Bicyclo[2,2,l]hept-5-en-2-ylcarbonylhydrazone with Lanthanide

S. Qingbao, W. Xiaoli, H. Guosheng, and M. Yongxiang

Department of Chemistry, Lanzhou University, 730000 Lanzhou, China

Abstract: A new organometallic ligand, ferrocenecarbaldehyde bicycle [2,2,1]hept-5-en-2-ylcarbonylhydraxone (Hbfh) and its lanthanide complexes [Ln(Hbfh)₃Cl₂]Cl . 4H₂O 1 (Ln = Y³⁺, La³⁺, Pr³⁺, Sm³⁺, and Er³⁺) and [Ln(bfh)₃]. 2H₂O 2 (Ln = La³⁺ and Pr³⁺) have been synthesized and characterized using elemental analyses, IR, ¹H NMR, and electronic spectra, molar conductivity, and TGA analyses. The ligand coordinates to the metal ion as a bidentate donor in the keto form or in the enolic form. The complexes coordinating in the enolic form are more thermally stable than in the keto form.

Full paper in Portable Document Format: 503a141.pdf

Chemical Papers 50 (3) 141–145 (1996)