... 1aa n=3 b n=4 We expect that molecules such as 11-13 should behave as good bidentate and tridentate chelators and their transition metal chemistry, particularly with Ru(II), will be investigated. ... 59, No. 4, 1994 827 (14) Allen, CFH; Bell, A. Organic Syntheses; Wiley ... J. Chem. ...