Bosch Eric, Barnes Charles L, Brennan Nathan L, Eakins Galen L, Breyfogle Bryan E
Chemistry Department, Missouri State University, Springfield, MO 65897, USA.
J Org Chem. 2008 May 16;73(10):3931-4. doi: 10.1021/jo800343f. Epub 2008 Apr 12.
The design and synthesis of a new dipyridyl ligand with appended phenanthryl moieties is described. On addition of increments of silver(I) trifluoromethanesulfonate to a solution of the ligand, the phenanthryl protons shift upfield in the (1)H NMR spectrum, suggesting that the phenanthrenes pi-stack on coordination of silver(I). In accord with this, the oxidation potential decreased from 1.74 to 1.55 V on complexation of silver(I). The pi-stacking was confirmed with the single-crystal X-ray structure of a palladium(II) coordination complex.
本文描述了一种带有附加菲基部分的新型联吡啶配体的设计与合成。向该配体的溶液中逐次加入三氟甲磺酸银(I)时，菲基质子在(1)H NMR谱中向高场移动，这表明菲在银(I)配位时发生了π-堆积。与此相符的是，银(I)络合后氧化电位从1.74 V降至1.55 V。通过钯(II)配位络合物的单晶X射线结构证实了π-堆积。
