已经对一系列具有叔取代胺的配体的四配位铍(II)配合物的结构进行了计算建模,并使用6-311 ++的轨距包括原子轨道(GIAO)方法确定了其9 Be磁屏蔽值g(2d,p)级别。与极性质子溶剂中的实验值相比,在计算出的9 Be NMR化学位移之间观察到良好的相关性,极性质子溶剂中记录的值则较小。对许多替代复杂结构进行了建模,从而使实验与计算相比有了改进9NMR化学位移表明,在某些情况下,铍原子没有完全包封。几个合成的复合物产生了意想不到的荧光,并检查与所述电子跃迁相关联的所述计算出的分子轨道图表表明,在某些构象锁定赋予刚性来II协调跨越相邻的对齐的芳环允许离域桥接通过成为II。
已经对一系列具有叔取代胺的配体的四配位铍(II)配合物的结构进行了计算建模,并使用6-311 ++的轨距包括原子轨道(GIAO)方法确定了其9 Be磁屏蔽值g(2d,p)级别。与极性质子溶剂中的实验值相比,在计算出的9 Be NMR化学位移之间观察到良好的相关性,极性质子溶剂中记录的值则较小。对许多替代复杂结构进行了建模,从而使实验与计算相比有了改进9NMR化学位移表明,在某些情况下,铍原子没有完全包封。几个合成的复合物产生了意想不到的荧光,并检查与所述电子跃迁相关联的所述计算出的分子轨道图表表明,在某些构象锁定赋予刚性来II协调跨越相邻的对齐的芳环允许离域桥接通过成为II。
Importance of the Dimethylamino Functionality on a Multifunctional Framework for Regulating Metals, Amyloid-β, and Oxidative Stress in Alzheimer’s Disease
作者:Jeffrey S. Derrick、Richard A. Kerr、Kyle J. Korshavn、Michael J. McLane、Juhye Kang、Eunju Nam、Ayyalusamy Ramamoorthy、Brandon T. Ruotolo、Mi Hee Lim
DOI:10.1021/acs.inorgchem.6b00525
日期:2016.5.16
multifunctionality in addition to tuning its metalbinding affinity. Our structure–reactivity investigations have implicated the dimethylamino group as a key component for supplying the antiamyloidogenic characteristics of ML in both the absence and presence of metal ions. Two-dimensional NMR studies indicate that structural variations of ML could tune its interaction sites along the Aβ sequence. In addition
Direct Nitric Oxide Detection in Aqueous Solution by Copper(II) Fluorescein Complexes
作者:Mi Hee Lim、Brian A. Wong、William H. Pitcock、Deepa Mokshagundam、Mu-Hyun Baik、Stephen J. Lippard
DOI:10.1021/ja064955e
日期:2006.11.1
fluorescence increase of Cu(FL(5)) occurs by reduction of Cu(II) to Cu(I) with concomitant dissociation of the N-nitrosated fluorophore ligand from copper. Spectroscopic and product analyses of the reaction of the FL(5) copper complex with NO indicated that the N-nitrosated fluorescein ligand (FL(5)-NO) is the species responsible for fluorescence turn-on. Density functional theory (DFT) calculations of FL(5)
Encapsulation of the Be<sup>II</sup> Cation: Spectroscopic and Computational Study
作者:Karl J. Shaffer、Ross J. Davidson、Anthony K. Burrell、T. Mark McCleskey、Paul G. Plieger
DOI:10.1021/ic302770t
日期:2013.4.1
values in polar protic solvents, less so for the values recorded in polaraproticsolvents. A number of alternative complex structures were modeled, resulting in an improvement in experimental versus computational 9Be NMR chemical shifts, suggesting that in some cases full encapsulation on the beryllium atom was not occurring. Several of the synthesized complexes gave rise to unexpected fluorescence
已经对一系列具有叔取代胺的配体的四配位铍(II)配合物的结构进行了计算建模,并使用6-311 ++的轨距包括原子轨道(GIAO)方法确定了其9 Be磁屏蔽值g(2d,p)级别。与极性质子溶剂中的实验值相比,在计算出的9 Be NMR化学位移之间观察到良好的相关性,极性质子溶剂中记录的值则较小。对许多替代复杂结构进行了建模,从而使实验与计算相比有了改进9NMR化学位移表明,在某些情况下,铍原子没有完全包封。几个合成的复合物产生了意想不到的荧光,并检查与所述电子跃迁相关联的所述计算出的分子轨道图表表明,在某些构象锁定赋予刚性来II协调跨越相邻的对齐的芳环允许离域桥接通过成为II。