A relationship between amide hydrogen bond strength and quinone reduction potential: Implications for photosystem I and bacterial reaction center quinone function
作者:Ken S. Feldman、D. Keith Hester、John H. Golbeck
DOI:10.1016/j.bmcl.2007.06.041
日期:2007.9
and NMR peak position, as indicators of internal H-bond strength, and the quinone half-wave reduction potential, was observed. These data are consistent with the prevailing hypothesis that quinone carbonyl H-bonding in general, and stronger H-bonds in particular, favorably bias the endogenous quinone's electrochemical potential toward easier reduction.
制备了一系列11种简单的叶绿醌衍生物,每种衍生物都没有延伸的植酸基侧链,但在一个或两个周边位置具有H键供体酰胺,并测量了一些显着的物理性质。观察到作为内部氢键强度指标的IR频率和NMR峰位置与醌半波还原电位之间的相关性。这些数据与普遍的假设一致,即一般的醌羰基H键结合,尤其是更强的H键,有利于使内源醌的电化学势偏向于易于还原。