Abstract
Cyrhetrenyl Schiff base derivatives of the form (η 5-C 5H 4CH NAr)Re(CO) 3, [Ar = Ph ( 1a) C 6H 4OMe- p ( 1b) and C 6H 4NO 2- p ( 1c)] have been prepared from cyrhetrenylcarbaldehyde and the corresponding aromatic amines. 1H and 13C NMR indicates that these compounds have the anti-( E) conformation in solution and the X-ray crystal structure of 1b confirms that it also adopts the anti-( E) form in the solid state. Further reaction of cyrhetrenylaldimines 1 with sodium borohydride in methanol produces quantitatively, the corresponding amine derivatives (η 5-C 5H 4CH 2–NHAr)Re(CO) 3 [Ar = Ph ( 2a) C 6H 4OMe- p ( 2b) and C 6H 4NO 2- p ( 2c)]. All these cyrhetrenylamines were characterized by IR, 1H and 13C NMR, MS. Additionally, 2b has been characterized structurally.
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